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    <header>
        <a href="./" title="lodash"><img src="./images/logo.png" alt="lodash">v4.5.0正式版</a>
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        <div id="tochead"><a href="./">主页</a></div>
        
<ul>
<li id="page-tree" class="folder">
<ul>
<li><a href="./getting-started" title="Getting Started">Getting Started</a></li>
<li><a href="./custom-builds" title="Custom Builds">Custom Builds</a></li>
<li><a href="./all" title="All-in-one Doc" class = "open">All-in-one Doc</a></li>
</ul></li>
<li id="page-tree-array" class="folder"><span class="folderPage">Array</span>
<ul>
<li><a href="./chunk" title="_.chunk(array, [size=0])">chunk</a></li>
<li><a href="./compact" title="_.compact(array)">compact</a></li>
<li><a href="./concat" title="_.concat(array, [values])">concat</a></li>
<li><a href="./difference" title="_.difference(array, [values])">difference</a></li>
<li><a href="./differenceBy" title="_.differenceBy(array, [values], [iteratee=_.identity])">differenceBy</a></li>
<li><a href="./differenceWith" title="_.differenceWith(array, [values], [comparator])">differenceWith</a></li>
<li><a href="./drop" title="_.drop(array, [n=1])">drop</a></li>
<li><a href="./dropRight" title="_.dropRight(array, [n=1])">dropRight</a></li>
<li><a href="./dropRightWhile" title="_.dropRightWhile(array, [predicate=_.identity])">dropRightWhile</a></li>
<li><a href="./dropWhile" title="_.dropWhile(array, [predicate=_.identity])">dropWhile</a></li>
<li><a href="./fill" title="_.fill(array, value, [start=0], [end=array.length])">fill</a></li>
<li><a href="./findIndex" title="_.findIndex(array, [predicate=_.identity])">findIndex</a></li>
<li><a href="./findLastIndex" title="_.findLastIndex(array, [predicate=_.identity])">findLastIndex</a></li>
<li><a href="./flatten" title="_.flatten(array)">flatten</a></li>
<li><a href="./flattenDeep" title="_.flattenDeep(array)">flattenDeep</a></li>
<li><a href="./flattenDepth" title="_.flattenDepth(array, [depth=1])">flattenDepth</a></li>
<li><a href="./fromPairs" title="_.fromPairs(pairs)">fromPairs</a></li>
<li><a href="./head" title="_.head(array)">head <span class="aliases">first</span></a></li>
<li><a href="./indexOf" title="_.indexOf(array, value, [fromIndex=0])">indexOf</a></li>
<li><a href="./initial" title="_.initial()">initial</a></li>
<li><a href="./intersection" title="_.intersection([arrays])">intersection</a></li>
<li><a href="./intersectionBy" title="_.intersectionBy([arrays], [iteratee=_.identity])">intersectionBy</a></li>
<li><a href="./intersectionWith" title="_.intersectionWith([arrays], [comparator])">intersectionWith</a></li>
<li><a href="./join" title="_.join(array, [separator=&#39;,&#39;])">join</a></li>
<li><a href="./last" title="_.last(array)">last</a></li>
<li><a href="./lastIndexOf" title="_.lastIndexOf(array, value, [fromIndex=array.length-1])">lastIndexOf</a></li>
<li><a href="./prototype-reverse" title="_.prototype.reverse()">prototype.reverse</a></li>
<li><a href="./pull" title="_.pull(array, [values])">pull</a></li>
<li><a href="./pullAll" title="_.pullAll(array, values)">pullAll</a></li>
<li><a href="./pullAllBy" title="_.pullAllBy(array, values, [iteratee=_.identity])">pullAllBy</a></li>
<li><a href="./pullAt" title="_.pullAt(array, [indexes])">pullAt</a></li>
<li><a href="./remove" title="_.remove(array, [predicate=_.identity])">remove</a></li>
<li><a href="./slice" title="_.slice(array, [start=0], [end=array.length])">slice</a></li>
<li><a href="./sortedIndex" title="_.sortedIndex(array, value)">sortedIndex</a></li>
<li><a href="./sortedIndexBy" title="_.sortedIndexBy(array, value, [iteratee=_.identity])">sortedIndexBy</a></li>
<li><a href="./sortedIndexOf" title="_.sortedIndexOf(array, value)">sortedIndexOf</a></li>
<li><a href="./sortedLastIndex" title="_.sortedLastIndex(array, value)">sortedLastIndex</a></li>
<li><a href="./sortedLastIndexBy" title="_.sortedLastIndexBy(array, value, [iteratee=_.identity])">sortedLastIndexBy</a></li>
<li><a href="./sortedLastIndexOf" title="_.sortedLastIndexOf(array, value)">sortedLastIndexOf</a></li>
<li><a href="./sortedUniq" title="_.sortedUniq(array)">sortedUniq</a></li>
<li><a href="./sortedUniqBy" title="_.sortedUniqBy(array, [iteratee])">sortedUniqBy</a></li>
<li><a href="./tail" title="_.tail(array)">tail</a></li>
<li><a href="./take" title="_.take(array, [n=1])">take</a></li>
<li><a href="./takeRight" title="_.takeRight(array, [n=1])">takeRight</a></li>
<li><a href="./takeRightWhile" title="_.takeRightWhile(array, [predicate=_.identity])">takeRightWhile</a></li>
<li><a href="./takeWhile" title="_.takeWhile(array, [predicate=_.identity])">takeWhile</a></li>
<li><a href="./union" title="_.union([arrays])">union</a></li>
<li><a href="./unionBy" title="_.unionBy([arrays], [iteratee=_.identity])">unionBy</a></li>
<li><a href="./unionWith" title="_.unionWith([arrays], [comparator])">unionWith</a></li>
<li><a href="./uniq" title="_.uniq(array)">uniq</a></li>
<li><a href="./uniqBy" title="_.uniqBy(array, [iteratee=_.identity])">uniqBy</a></li>
<li><a href="./uniqWith" title="_.uniqWith(array, [comparator])">uniqWith</a></li>
<li><a href="./unzip" title="_.unzip(array)">unzip</a></li>
<li><a href="./unzipWith" title="_.unzipWith(array, [iteratee=_.identity])">unzipWith</a></li>
<li><a href="./without" title="_.without(array, [values])">without</a></li>
<li><a href="./xor" title="_.xor([arrays])">xor</a></li>
<li><a href="./xorBy" title="_.xorBy([arrays], [iteratee=_.identity])">xorBy</a></li>
<li><a href="./xorWith" title="_.xorWith([arrays], [comparator])">xorWith</a></li>
<li><a href="./zip" title="_.zip([arrays])">zip</a></li>
<li><a href="./zipObject" title="_.zipObject([props=[]], [values=[]])">zipObject</a></li>
<li><a href="./zipObjectDeep" title="_.zipObjectDeep([props=[]], [values=[]])">zipObjectDeep</a></li>
<li><a href="./zipWith" title="_.zipWith([arrays])">zipWith</a></li>
</ul></li>
<li id="page-tree-collection" class="folder"><span class="folderPage">Collection</span>
<ul>
<li><a href="./countBy" title="_.countBy(collection, [iteratee=_.identity])">countBy</a></li>
<li><a href="./every" title="_.every(collection, [predicate=_.identity])">every</a></li>
<li><a href="./filter" title="_.filter(collection, [predicate=_.identity])">filter</a></li>
<li><a href="./find" title="_.find(collection, [predicate=_.identity])">find</a></li>
<li><a href="./findLast" title="_.findLast(collection, [predicate=_.identity])">findLast</a></li>
<li><a href="./flatMap" title="_.flatMap(collection, [iteratee=_.identity])">flatMap</a></li>
<li><a href="./forEach" title="_.forEach(collection, [iteratee=_.identity])">forEach <span class="aliases">each</span></a></li>
<li><a href="./forEachRight" title="_.forEachRight(collection, [iteratee=_.identity])">forEachRight <span class="aliases">eachRight</span></a></li>
<li><a href="./groupBy" title="_.groupBy(collection, [iteratee=_.identity])">groupBy</a></li>
<li><a href="./includes" title="_.includes(collection, value, [fromIndex=0])">includes</a></li>
<li><a href="./invokeMap" title="_.invokeMap(collection, path, [args])">invokeMap</a></li>
<li><a href="./keyBy" title="_.keyBy(collection, [iteratee=_.identity])">keyBy</a></li>
<li><a href="./map" title="_.map(collection, [iteratee=_.identity])">map</a></li>
<li><a href="./orderBy" title="_.orderBy(collection, [iteratees=[_.identity]], [orders])">orderBy</a></li>
<li><a href="./partition" title="_.partition(collection, [predicate=_.identity])">partition</a></li>
<li><a href="./reduce" title="_.reduce(collection, [iteratee=_.identity], [accumulator])">reduce</a></li>
<li><a href="./reduceRight" title="_.reduceRight(collection, [iteratee=_.identity], [accumulator])">reduceRight</a></li>
<li><a href="./reject" title="_.reject(collection, [predicate=_.identity])">reject</a></li>
<li><a href="./sample" title="_.sample(collection)">sample</a></li>
<li><a href="./sampleSize" title="_.sampleSize(collection, [n=0])">sampleSize</a></li>
<li><a href="./shuffle" title="_.shuffle(collection)">shuffle</a></li>
<li><a href="./size" title="_.size(collection)">size</a></li>
<li><a href="./some" title="_.some(collection, [predicate=_.identity])">some</a></li>
<li><a href="./sortBy" title="_.sortBy(collection, [iteratees=[_.identity]])">sortBy</a></li>
</ul></li>
<li id="page-tree-date" class="folder"><span class="folderPage">Date</span>
<ul>
<li><a href="./now" title="_.now()">now</a></li>
</ul></li>
<li id="page-tree-function" class="folder"><span class="folderPage">Function</span>
<ul>
<li><a href="./after" title="_.after(n, func)">after</a></li>
<li><a href="./ary" title="_.ary(func, [n=func.length])">ary</a></li>
<li><a href="./before" title="_.before(n, func)">before</a></li>
<li><a href="./bind" title="_.bind(func, thisArg, [partials])">bind</a></li>
<li><a href="./bindKey" title="_.bindKey(object, key, [partials])">bindKey</a></li>
<li><a href="./curry" title="_.curry(func, [arity=func.length])">curry</a></li>
<li><a href="./curryRight" title="_.curryRight(func, [arity=func.length])">curryRight</a></li>
<li><a href="./debounce" title="_.debounce(func, [wait=0], [options])">debounce</a></li>
<li><a href="./defer" title="_.defer(func, [args])">defer</a></li>
<li><a href="./delay" title="_.delay(func, wait, [args])">delay</a></li>
<li><a href="./flip" title="_.flip(func)">flip</a></li>
<li><a href="./memoize" title="_.memoize(func, [resolver])">memoize</a></li>
<li><a href="./negate" title="_.negate(predicate)">negate</a></li>
<li><a href="./once" title="_.once(func)">once</a></li>
<li><a href="./overArgs" title="_.overArgs(func, [transforms])">overArgs</a></li>
<li><a href="./partial" title="_.partial(func, [partials])">partial</a></li>
<li><a href="./partialRight" title="_.partialRight(func, [partials])">partialRight</a></li>
<li><a href="./rearg" title="_.rearg(func, indexes)">rearg</a></li>
<li><a href="./rest" title="_.rest(func, [start=func.length-1])">rest</a></li>
<li><a href="./spread" title="_.spread(func)">spread</a></li>
<li><a href="./throttle" title="_.throttle(func, [wait=0], [options])">throttle</a></li>
<li><a href="./unary" title="_.unary(func)">unary</a></li>
<li><a href="./wrap" title="_.wrap(value, wrapper)">wrap</a></li>
</ul></li>
<li id="page-tree-lang" class="folder"><span class="folderPage">Lang</span>
<ul>
<li><a href="./castArray" title="_.castArray(value)">castArray</a></li>
<li><a href="./clone" title="_.clone(value)">clone</a></li>
<li><a href="./cloneDeep" title="_.cloneDeep(value)">cloneDeep</a></li>
<li><a href="./cloneDeepWith" title="_.cloneDeepWith(value, [customizer])">cloneDeepWith</a></li>
<li><a href="./cloneWith" title="_.cloneWith(value, [customizer])">cloneWith</a></li>
<li><a href="./eq" title="_.eq(value, other)">eq</a></li>
<li><a href="./gt" title="_.gt(value, other)">gt</a></li>
<li><a href="./gte" title="_.gte(value, other)">gte</a></li>
<li><a href="./isArguments" title="_.isArguments(value)">isArguments</a></li>
<li><a href="./isArray" title="_.isArray(value)">isArray</a></li>
<li><a href="./isArrayBuffer" title="_.isArrayBuffer(value)">isArrayBuffer</a></li>
<li><a href="./isArrayLike" title="_.isArrayLike(value)">isArrayLike</a></li>
<li><a href="./isArrayLikeObject" title="_.isArrayLikeObject(value)">isArrayLikeObject</a></li>
<li><a href="./isBoolean" title="_.isBoolean(value)">isBoolean</a></li>
<li><a href="./isBuffer" title="_.isBuffer(value)">isBuffer</a></li>
<li><a href="./isDate" title="_.isDate(value)">isDate</a></li>
<li><a href="./isElement" title="_.isElement(value)">isElement</a></li>
<li><a href="./isEmpty" title="_.isEmpty(value)">isEmpty</a></li>
<li><a href="./isEqual" title="_.isEqual(value, other)">isEqual</a></li>
<li><a href="./isEqualWith" title="_.isEqualWith(value, other, [customizer])">isEqualWith</a></li>
<li><a href="./isError" title="_.isError(value)">isError</a></li>
<li><a href="./isFinite" title="_.isFinite(value)">isFinite</a></li>
<li><a href="./isFunction" title="_.isFunction(value)">isFunction</a></li>
<li><a href="./isInteger" title="_.isInteger(value)">isInteger</a></li>
<li><a href="./isLength" title="_.isLength(value)">isLength</a></li>
<li><a href="./isMap" title="_.isMap(value)">isMap</a></li>
<li><a href="./isMatch" title="_.isMatch(object, source)">isMatch</a></li>
<li><a href="./isMatchWith" title="_.isMatchWith(object, source, [customizer])">isMatchWith</a></li>
<li><a href="./isNaN" title="_.isNaN(value)">isNaN</a></li>
<li><a href="./isNative" title="_.isNative(value)">isNative</a></li>
<li><a href="./isNil" title="_.isNil(value)">isNil</a></li>
<li><a href="./isNull" title="_.isNull(value)">isNull</a></li>
<li><a href="./isNumber" title="_.isNumber(value)">isNumber</a></li>
<li><a href="./isObject" title="_.isObject(value)">isObject</a></li>
<li><a href="./isObjectLike" title="_.isObjectLike(value)">isObjectLike</a></li>
<li><a href="./isPlainObject" title="_.isPlainObject(value)">isPlainObject</a></li>
<li><a href="./isRegExp" title="_.isRegExp(value)">isRegExp</a></li>
<li><a href="./isSafeInteger" title="_.isSafeInteger(value)">isSafeInteger</a></li>
<li><a href="./isSet" title="_.isSet(value)">isSet</a></li>
<li><a href="./isString" title="_.isString(value)">isString</a></li>
<li><a href="./isSymbol" title="_.isSymbol(value)">isSymbol</a></li>
<li><a href="./isTypedArray" title="_.isTypedArray(value)">isTypedArray</a></li>
<li><a href="./isUndefined" title="_.isUndefined(value)">isUndefined</a></li>
<li><a href="./isWeakMap" title="_.isWeakMap(value)">isWeakMap</a></li>
<li><a href="./isWeakSet" title="_.isWeakSet(value)">isWeakSet</a></li>
<li><a href="./lt" title="_.lt(value, other)">lt</a></li>
<li><a href="./lte" title="_.lte(value, other)">lte</a></li>
<li><a href="./toArray" title="_.toArray(value)">toArray</a></li>
<li><a href="./toInteger" title="_.toInteger(value)">toInteger</a></li>
<li><a href="./toLength" title="_.toLength(value)">toLength</a></li>
<li><a href="./toNumber" title="_.toNumber(value)">toNumber</a></li>
<li><a href="./toPlainObject" title="_.toPlainObject(value)">toPlainObject</a></li>
<li><a href="./toSafeInteger" title="_.toSafeInteger(value)">toSafeInteger</a></li>
<li><a href="./toString" title="_.toString(value)">toString</a></li>
</ul></li>
<li id="page-tree-math" class="folder"><span class="folderPage">Math</span>
<ul>
<li><a href="./add" title="_.add(augend, addend)">add</a></li>
<li><a href="./ceil" title="_.ceil(number, [precision=0])">ceil</a></li>
<li><a href="./floor" title="_.floor(number, [precision=0])">floor</a></li>
<li><a href="./max" title="_.max(array)">max</a></li>
<li><a href="./maxBy" title="_.maxBy(array, [iteratee=_.identity])">maxBy</a></li>
<li><a href="./mean" title="_.mean(array)">mean</a></li>
<li><a href="./min" title="_.min(array)">min</a></li>
<li><a href="./minBy" title="_.minBy(array, [iteratee=_.identity])">minBy</a></li>
<li><a href="./round" title="_.round(number, [precision=0])">round</a></li>
<li><a href="./subtract" title="_.subtract(minuend, subtrahend)">subtract</a></li>
<li><a href="./sum" title="_.sum(array)">sum</a></li>
<li><a href="./sumBy" title="_.sumBy(array, [iteratee=_.identity])">sumBy</a></li>
</ul></li>
<li id="page-tree-methods" class="folder"><span class="folderPage">Methods</span>
<ul>
<li><a href="./templateSettings-imports-_" title="_.templateSettings.imports._">templateSettings.imports._</a></li>
</ul></li>
<li id="page-tree-number" class="folder"><span class="folderPage">Number</span>
<ul>
<li><a href="./clamp" title="_.clamp(number, [min], max)">clamp</a></li>
<li><a href="./inRange" title="_.inRange(number, [start=0], end)">inRange</a></li>
<li><a href="./random" title="_.random([min=0], [max=1], [floating])">random</a></li>
</ul></li>
<li id="page-tree-object" class="folder"><span class="folderPage">Object</span>
<ul>
<li><a href="./assign" title="_.assign(object, [sources])">assign</a></li>
<li><a href="./assignIn" title="_.assignIn(object, [sources])">assignIn <span class="aliases">extend</span></a></li>
<li><a href="./assignInWith" title="_.assignInWith(object, sources, [customizer])">assignInWith <span class="aliases">extendWith</span></a></li>
<li><a href="./assignWith" title="_.assignWith(object, sources, [customizer])">assignWith</a></li>
<li><a href="./at" title="_.at(object, [paths])">at</a></li>
<li><a href="./create" title="_.create(prototype, [properties])">create</a></li>
<li><a href="./defaults" title="_.defaults(object, [sources])">defaults</a></li>
<li><a href="./defaultsDeep" title="_.defaultsDeep(object, [sources])">defaultsDeep</a></li>
<li><a href="./findKey" title="_.findKey(object, [predicate=_.identity])">findKey</a></li>
<li><a href="./findLastKey" title="_.findLastKey(object, [predicate=_.identity])">findLastKey</a></li>
<li><a href="./forIn" title="_.forIn(object, [iteratee=_.identity])">forIn</a></li>
<li><a href="./forInRight" title="_.forInRight(object, [iteratee=_.identity])">forInRight</a></li>
<li><a href="./forOwn" title="_.forOwn(object, [iteratee=_.identity])">forOwn</a></li>
<li><a href="./forOwnRight" title="_.forOwnRight(object, [iteratee=_.identity])">forOwnRight</a></li>
<li><a href="./functions" title="_.functions(object)">functions</a></li>
<li><a href="./functionsIn" title="_.functionsIn(object)">functionsIn</a></li>
<li><a href="./get" title="_.get(object, path, [defaultValue])">get</a></li>
<li><a href="./has" title="_.has(object, path)">has</a></li>
<li><a href="./hasIn" title="_.hasIn(object, path)">hasIn</a></li>
<li><a href="./invert" title="_.invert(object, [multiVal])">invert</a></li>
<li><a href="./invertBy" title="_.invertBy(object, [iteratee=_.identity])">invertBy</a></li>
<li><a href="./invoke" title="_.invoke(object, path, [args])">invoke</a></li>
<li><a href="./keys" title="_.keys(object)">keys</a></li>
<li><a href="./keysIn" title="_.keysIn(object)">keysIn</a></li>
<li><a href="./mapKeys" title="_.mapKeys(object, [iteratee=_.identity])">mapKeys</a></li>
<li><a href="./mapValues" title="_.mapValues(object, [iteratee=_.identity])">mapValues</a></li>
<li><a href="./merge" title="_.merge(object, [sources])">merge</a></li>
<li><a href="./mergeWith" title="_.mergeWith(object, sources, customizer)">mergeWith</a></li>
<li><a href="./omit" title="_.omit(object, [props])">omit</a></li>
<li><a href="./omitBy" title="_.omitBy(object, [predicate=_.identity])">omitBy</a></li>
<li><a href="./pick" title="_.pick(object, [props])">pick</a></li>
<li><a href="./pickBy" title="_.pickBy(object, [predicate=_.identity])">pickBy</a></li>
<li><a href="./result" title="_.result(object, path, [defaultValue])">result</a></li>
<li><a href="./set" title="_.set(object, path, value)">set</a></li>
<li><a href="./setWith" title="_.setWith(object, path, value, [customizer])">setWith</a></li>
<li><a href="./toPairs" title="_.toPairs(object)">toPairs</a></li>
<li><a href="./toPairsIn" title="_.toPairsIn(object)">toPairsIn</a></li>
<li><a href="./transform" title="_.transform(object, [iteratee=_.identity], [accumulator])">transform</a></li>
<li><a href="./unset" title="_.unset(object, path)">unset</a></li>
<li><a href="./values" title="_.values(object)">values</a></li>
<li><a href="./valuesIn" title="_.valuesIn(object)">valuesIn</a></li>
</ul></li>
<li id="page-tree-properties" class="folder"><span class="folderPage">Properties</span>
<ul>
<li><a href="./templateSettings" title="_.templateSettings">templateSettings</a></li>
<li><a href="./templateSettings-escape" title="_.templateSettings.escape">templateSettings.escape</a></li>
<li><a href="./templateSettings-evaluate" title="_.templateSettings.evaluate">templateSettings.evaluate</a></li>
<li><a href="./templateSettings-imports" title="_.templateSettings.imports">templateSettings.imports</a></li>
<li><a href="./templateSettings-interpolate" title="_.templateSettings.interpolate">templateSettings.interpolate</a></li>
<li><a href="./templateSettings-variable" title="_.templateSettings.variable">templateSettings.variable</a></li>
<li><a href="./VERSION" title="_.VERSION">VERSION</a></li>
</ul></li>
<li id="page-tree-seq" class="folder"><span class="folderPage">Seq</span>
<ul>
<li><a href="./_" title="_(value)">_</a></li>
<li><a href="./chain" title="_.chain(value)">chain</a></li>
<li><a href="./prototype-at" title="_.prototype.at([paths])">prototype.at</a></li>
<li><a href="./prototype-chain" title="_.prototype.chain()">prototype.chain</a></li>
<li><a href="./prototype-commit" title="_.prototype.commit()">prototype.commit</a></li>
<li><a href="./prototype-next" title="_.prototype.next()">prototype.next</a></li>
<li><a href="./prototype-plant" title="_.prototype.plant(value)">prototype.plant</a></li>
<li><a href="./prototype-Symbol-iterator" title="_.prototype.Symbol.iterator()">prototype.Symbol.iterator</a></li>
<li><a href="./prototype-value" title="_.prototype.value()">prototype.value <span class="aliases">run, toJSON, valueOf</span></a></li>
<li><a href="./tap" title="_.tap(value, interceptor)">tap</a></li>
<li><a href="./thru" title="_.thru(value, interceptor)">thru</a></li>
<li><a href="./wrapperFlatMap" title="_.wrapperFlatMap([iteratee=_.identity])">wrapperFlatMap</a></li>
</ul></li>
<li id="page-tree-string" class="folder"><span class="folderPage">String</span>
<ul>
<li><a href="./camelCase" title="_.camelCase([string=&#39;&#39;])">camelCase</a></li>
<li><a href="./capitalize" title="_.capitalize([string=&#39;&#39;])">capitalize</a></li>
<li><a href="./deburr" title="_.deburr([string=&#39;&#39;])">deburr</a></li>
<li><a href="./endsWith" title="_.endsWith([string=&#39;&#39;], [target], [position=string.length])">endsWith</a></li>
<li><a href="./escape" title="_.escape([string=&#39;&#39;])">escape</a></li>
<li><a href="./escapeRegExp" title="_.escapeRegExp([string=&#39;&#39;])">escapeRegExp</a></li>
<li><a href="./kebabCase" title="_.kebabCase([string=&#39;&#39;])">kebabCase</a></li>
<li><a href="./lowerCase" title="_.lowerCase([string=&#39;&#39;])">lowerCase</a></li>
<li><a href="./lowerFirst" title="_.lowerFirst([string=&#39;&#39;])">lowerFirst</a></li>
<li><a href="./pad" title="_.pad([string=&#39;&#39;], [length=0], [chars=&#39; &#39;])">pad</a></li>
<li><a href="./padEnd" title="_.padEnd([string=&#39;&#39;], [length=0], [chars=&#39; &#39;])">padEnd</a></li>
<li><a href="./padStart" title="_.padStart([string=&#39;&#39;], [length=0], [chars=&#39; &#39;])">padStart</a></li>
<li><a href="./parseInt" title="_.parseInt(string, [radix])">parseInt</a></li>
<li><a href="./repeat" title="_.repeat([string=&#39;&#39;], [n=0])">repeat</a></li>
<li><a href="./replace" title="_.replace([string=&#39;&#39;], pattern)">replace</a></li>
<li><a href="./snakeCase" title="_.snakeCase([string=&#39;&#39;])">snakeCase</a></li>
<li><a href="./split" title="_.split([string=&#39;&#39;], [separator], [limit])">split</a></li>
<li><a href="./startCase" title="_.startCase([string=&#39;&#39;])">startCase</a></li>
<li><a href="./startsWith" title="_.startsWith([string=&#39;&#39;], [target], [position=0])">startsWith</a></li>
<li><a href="./template" title="_.template([string=&#39;&#39;], [options])">template</a></li>
<li><a href="./toLower" title="_.toLower([string=&#39;&#39;])">toLower</a></li>
<li><a href="./toUpper" title="_.toUpper([string=&#39;&#39;])">toUpper</a></li>
<li><a href="./trim" title="_.trim([string=&#39;&#39;], [chars=whitespace])">trim</a></li>
<li><a href="./trimEnd" title="_.trimEnd([string=&#39;&#39;], [chars=whitespace])">trimEnd</a></li>
<li><a href="./trimStart" title="_.trimStart([string=&#39;&#39;], [chars=whitespace])">trimStart</a></li>
<li><a href="./truncate" title="_.truncate([string=&#39;&#39;], [options])">truncate</a></li>
<li><a href="./unescape" title="_.unescape([string=&#39;&#39;])">unescape</a></li>
<li><a href="./upperCase" title="_.upperCase([string=&#39;&#39;])">upperCase</a></li>
<li><a href="./upperFirst" title="_.upperFirst([string=&#39;&#39;])">upperFirst</a></li>
<li><a href="./words" title="_.words([string=&#39;&#39;], [pattern])">words</a></li>
</ul></li>
<li id="page-tree-util" class="folder"><span class="folderPage">Util</span>
<ul>
<li><a href="./attempt" title="_.attempt(func)">attempt</a></li>
<li><a href="./bindAll" title="_.bindAll(object, methodNames)">bindAll</a></li>
<li><a href="./cond" title="_.cond(pairs)">cond</a></li>
<li><a href="./conforms" title="_.conforms(source)">conforms</a></li>
<li><a href="./constant" title="_.constant(value)">constant</a></li>
<li><a href="./flow" title="_.flow([funcs])">flow</a></li>
<li><a href="./flowRight" title="_.flowRight([funcs])">flowRight</a></li>
<li><a href="./identity" title="_.identity(value)">identity</a></li>
<li><a href="./iteratee" title="_.iteratee([func=_.identity])">iteratee</a></li>
<li><a href="./matches" title="_.matches(source)">matches</a></li>
<li><a href="./matchesProperty" title="_.matchesProperty(path, srcValue)">matchesProperty</a></li>
<li><a href="./method" title="_.method(path, [args])">method</a></li>
<li><a href="./methodOf" title="_.methodOf(object, [args])">methodOf</a></li>
<li><a href="./mixin" title="_.mixin([object=lodash], source, [options])">mixin</a></li>
<li><a href="./noConflict" title="_.noConflict()">noConflict</a></li>
<li><a href="./noop" title="_.noop()">noop</a></li>
<li><a href="./nthArg" title="_.nthArg([n=0])">nthArg</a></li>
<li><a href="./over" title="_.over(iteratees)">over</a></li>
<li><a href="./overEvery" title="_.overEvery(predicates)">overEvery</a></li>
<li><a href="./overSome" title="_.overSome(predicates)">overSome</a></li>
<li><a href="./property" title="_.property(path)">property</a></li>
<li><a href="./propertyOf" title="_.propertyOf(object)">propertyOf</a></li>
<li><a href="./range" title="_.range([start=0], end, [step=1])">range</a></li>
<li><a href="./rangeRight" title="_.rangeRight([start=0], end, [step=1])">rangeRight</a></li>
<li><a href="./runInContext" title="_.runInContext([context=root])">runInContext</a></li>
<li><a href="./times" title="_.times(n, [iteratee=_.identity])">times</a></li>
<li><a href="./toPath" title="_.toPath(value)">toPath</a></li>
<li><a href="./uniqueId" title="_.uniqueId([prefix])">uniqueId</a></li>
</ul></li>
</ul>
    </div>

</nav>

<div id="main" onclick="">
    <div id="content" class="markdown-body">
        <div data-render-page="all"><div data-render-page="default"><div data-render-html="/"><h2 id="lodash">lodash</h2>
<p>一个 JavaScript 的实用工具库, 表现一致性, <a href="https://www.npmjs.com/browse/keyword/lodash-modularized" target="_blank">模块化</a>, 高性能, 以及 <a href="#features">可扩展</a></p>
<iframe style="width:105px;height:25px" allowtransparency="" frameborder="0" scrolling="no" src="./github-btn.html?user=lodash&amp;repo=lodash&amp;count=true&amp;type=watch"></iframe>
<iframe style="width:105px; height:25px" allowtransparency="" frameborder="0" scrolling="no" src="./github-btn.html?user=lodash&amp;repo=lodash&amp;count=true&amp;type=fork"></iframe>

<h4 id="example">Example</h4>
<pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >assign</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// → { 'a': 1, 'b': 2, 'c': 3 }</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> n <span class="token operator" >*</span> <span class="token number" >3</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// → [3, 6, 9]</span>
</code></pre>
<h2 id="-">特点</h2>
<ul>
<li>~100% <a href="https://coveralls.io/github/lodash" target="_blank">代码覆盖率</a></li>
<li>遵循 <a href="http://semver.org/" target="_blank">语义化版本控制规范</a></li>
<li><a href="http://filimanjaro.com/blog/2014/introducing-lazy-evaluation/" target="_blank">延迟计算链</a></li>
<li><a href="./_">_(…)</a> 支持隐式链</li>
<li><a href="./ary">_.ary</a> &amp; <a href="./rearg">_.rearg</a> 改变函数的实参个数和顺序</li>
<li><a href="./at">_.at</a> 更方便的获取数组或对象的值</li>
<li><a href="./attempt">_.attempt</a> 无需 try-catch 来处理可能会出错的执行函数</li>
<li><a href="./before">_.before</a> 与 <a href="./after">_.after</a> 互补</li>
<li><a href="./bindKey">_.bindKey</a> 实现 <a href="http://michaux.ca/articles/lazy-function-definition-pattern" target="_blank"><em>“懒传参”</em></a></li>
<li><a href="./chunk">_.chunk</a> 按给定个数来拆分数组</li>
<li><a href="./clone">_.clone</a> 支持对 <code>Date</code> &amp; <code>RegExp</code> 对象的浅拷贝</li>
<li><a href="./cloneDeep">_.cloneDeep</a> 深拷贝数组或对象</li>
<li><a href="./curry">_.curry</a> &amp; <a href="./curryRight">_.curryRight</a> 用于创建 <a href="http://hughfdjackson.com/javascript/why-curry-helps/" target="_blank">柯里化</a> 函数</li>
<li><a href="./debounce">_.debounce</a> &amp; <a href="./throttle">_.throttle</a> 处理函数防抖和节流</li>
<li><a href="./defaultsDeep">_.defaultsDeep</a> 深分配对象的可枚举属性</li>
<li><a href="./fill">_.fill</a> 指定值填充数组</li>
<li><a href="./findKey">_.findKey</a> 按 keys 查找对象</li>
<li><a href="./flow">_.flow</a> 与 <a href="./flowRight">_.flowRight</a> (即 <code>_.compose</code>) 搭配</li>
<li><a href="./forEach">_.forEach</a> 支持提前中断</li>
<li><a href="./forIn">_.forIn</a> 遍历对象所有的可枚举属性</li>
<li><a href="./forOwn">_.forOwn</a> 遍历对象的所有属性</li>
<li><a href="./get">_.get</a> &amp; <a href="./set">_.set</a> 以 path 的方式获取和设置对象属性</li>
<li><a href="./gt">_.gt</a>, <a href="./gte">_.gte</a>, <a href="./lt">_.lt</a>, &amp; <a href="./lte">_.lte</a> 关系比较方法</li>
<li><a href="./inRange">_.inRange</a> 检测给定的数值是否在指定范围内</li>
<li><a href="./isNative">_.isNative</a> 检测是否是原生函数</li>
<li><a href="./isPlainObject">_.isPlainObject</a> &amp; <a href="./toPlainObject">_.toPlainObject</a> 检测是否是普通对象以及转换为普通对象</li>
<li><a href="./isTypedArray">_.isTypedArray</a> 检测是否是类型数组</li>
<li><a href="./mapKeys">_.mapKeys</a> 按对象的 key 迭代，并返回新 key 的对象</li>
<li><a href="./matches">_.matches</a> 支持深匹配对象</li>
<li><a href="./matchesProperty">_.matchesProperty</a> &amp; <a href="./matches">_.matches</a> &amp; <a href="./property">_.property</a> 互补</li>
<li><a href="./merge">_.merge</a> 相当于递归版 <a href="./extend">_.extend</a></li>
<li><a href="./method">_.method</a> &amp; <a href="./methodOf">_.methodOf</a> 创建一个调用方法的函数</li>
<li><a href="./modArgs">_.modArgs</a> 更高级的功能组合</li>
<li><a href="./parseInt">_.parseInt</a> 兼容各环境</li>
<li><a href="./pull">_.pull</a>, <a href="./pullAt">_.pullAt</a>, &amp; <a href="./remove">_.remove</a> 方便调整数组</li>
<li><a href="./random">_.random</a> 支持返回浮点数</li>
<li><a href="./restParam">_.restParam</a> &amp; <a href="./spread">_.spread</a> 应用一个 rest arguments 和 Spread operator 参数传递给函数</li>
<li><a href="./runInContext">_.runInContext</a> 无影响的 mixins 且更方便模拟</li>
<li><a href="./slice">_.slice</a> 支持裁剪类数组</li>
<li><a href="./sortByAll">_.sortByAll</a> &amp; <a href="./sortByOrder">_.sortByOrder</a> 多个属性排序</li>
<li><a href="./support">_.support</a> 标记环境功能</li>
<li><a href="./template">_.template</a> 支持 <a href="./templateSettings-imports"><em>“imports”</em></a> 方式 &amp; <a href="http://people.mozilla.org/%7Ejorendorff/es6-draft.html#sec-template-literal-lexical-components" target="_blank">ES 字符串模板</a></li>
<li><a href="./transform">_.transform</a> 更强大的 <a href="./reduce">_.reduce</a> 代替方法</li>
<li><a href="./unzipWith">_.unzipWith</a> &amp; <a href="./zipWith">_.zipWith</a> 指定如何重组分解后的数组</li>
<li><a href="./valuesIn">_.valuesIn</a> 获取所有可枚举属性的值</li>
<li><a href="./xor">_.xor</a> &amp; <a href="./difference">_.difference</a>, <a href="./intersection">_.intersection</a>, &amp; <a href="./union">_.union</a> 互补</li>
<li><a href="./add">_.add</a>, <a href="./round">_.round</a>, <a href="./sum">_.sum</a>, <a href="./doc" title="_.ceil, _.floor">及更多</a> 数学方法</li>
<li><a href="./bind">_.bind</a>, <a href="./curry">_.curry</a>, <a href="./partial">_.partial</a>, &amp; <a href="./docs" title="_.bindKey, _.curryRight, _.partialRight">及更多</a> 支持自定参数占位</li>
<li><a href="./capitalize">_.capitalize</a>, <a href="./trim">_.trim</a>, &amp; <a href="./docs" title="_.camelCase, _.deburr, _.endsWith, _.escapeRegExp, _.kebabCase, _.pad, _.padLeft, _.padRight, _.repeat, _.snakeCase, _.startsWith, _.trimLeft, _.trimRight, _.trunc, _.words">及更多</a> string 方法</li>
<li><a href="./clone">_.clone</a>, <a href="./isEqual">_.isEqual</a>, &amp; <a href="./docs" title="_.assign, _.cloneDeep, _.merge">及更多</a> 接受自定回调函数</li>
<li><a href="./dropWhile">_.dropWhile</a>, <a href="./takeWhile">_.takeWhile</a>, &amp; <a href="./docs" title="_.drop, _.dropRight, _.dropRightWhile, _.take, _.takeRight, _.takeRightWhile">及更多</a> 互补 <a href="./first">_.first</a>, <a href="./initial">_.initial</a>, <a href="./last">_.last</a>, &amp; <a href="./rest">_.rest</a></li>
<li><a href="./findLast">_.findLast</a>, <a href="./findLastKey">_.findLastKey</a>, &amp; <a href="./docs" title="_.curryRight, _.dropRight, _.dropRightWhile, _.flowRight, _.forEachRight, _.forInRight, _.forOwnRight, _.padRight, partialRight, _.takeRight, _.trimRight, _.takeRightWhile">及更多</a> 右结合方法</li>
<li><a href="./includes">_.includes</a>, <a href="./toArray">_.toArray</a>, &amp; <a href="./docs" title="_.at, _.countBy, _.every, _.filter, _.find, _.findLast, _.findWhere, _.forEach, _.forEachRight, _.groupBy, _.indexBy, _.invoke, _.map, _.max, _.min, _.partition, _.pluck, _.reduce, _.reduceRight, _.reject, _.shuffle, _.size, _.some, _.sortBy, _.sortByAll, _.sortByOrder, _.sum, _.where">及更多</a> 接受字符串方式</li>
<li><a href="./prototype-commit">_#commit</a> &amp; <a href="./prototype-plant">_#plant</a> 配合链式队列</li>
<li><a href="./thru">_#thru</a> 传递链式队列的值</li>
</ul>
<h2 id="-">关于翻译</h2>
<ul>
<li>该文档由 <a href="https://github.com/think2011/" target="_blank">think2011</a> 翻译，遵循 <a href="https://github.com/jldec/lodash-doc-src/blob/master/LICENSE" target="_blank">MIT协议</a>，翻译质量可能没法特别好，但会保证尽可能反复细心。</li>
<li>如果您有任何建议，或者意见，<a href="https://github.com/think2011/lodash-zh/issues" target="_blank">欢迎在此讨论，及时更正 ;-)</a>。</li>
</ul>
</div>
</div>
<div data-render-page="default"><div data-render-html="/getting-started"><h2 id="-">下载</h2>
<p>查看 <a href="https://github.com/lodash/lodash/wiki/build-differences" target="_blank">版本区别</a> 来选择适合你的版本</p>
<ul>
<li><a href="https://raw.githubusercontent.com/lodash/lodash/4.5.0/dist/lodash.core.js" target="_blank">核心版</a> (gzip压缩后 ~4kB)</li>
<li><a href="https://raw.githubusercontent.com/lodash/lodash/4.5.0/dist/lodash.js" target="_blank">完整版</a> (gzip压缩后 ~22kB)</li>
</ul>
<h2 id="-">引入</h2>
<p>浏览器中使用:</p>
<pre><code>&lt;script src=&quot;lodash.js&quot;&gt;&lt;/script&gt;
</code></pre><p>AMD 规范中使用:</p>
<pre><code>require([&#39;lodash&#39;], function(_) {});
</code></pre><p>使用 npm 安装:</p>
<pre><code>$ {sudo -H} npm i -g npm$ npm i --save lodash
</code></pre><p>Node.js/io.js 中使用:</p>
<pre><code>// 直接引用现代版本
var _ = require(&#39;lodash&#39;);

// 或引用某分类下的所有方法
var array = require(&#39;lodash/array&#39;);

// 或者引用具体方法 (很适合在 browserify/webpack 中做最小化打包)
var chunk = require(&#39;lodash/array/chunk&#39;);
</code></pre><p>查看 <a href="https://github.com/lodash/lodash/tree/3.0.0-npm" target="_blank">源码包</a> 了解更多详情</p>
<p><strong>注意:</strong>
在 REPL 中不要声明 <a href="http://nodejs.org/api/repl.html#repl_repl_features" target="_blank">特殊变量</a> &quot;<code>_</code>&quot;，安装 <a href="https://www.npmjs.com/package/n_" target="_blank">n_</a> 来代替。</p>
<h2 id="-">模块格式</h2>
<p>lodash 还有多种构建模块的格式</p>
<ul>
<li>npm 构建格式: <a href="https://www.npmjs.com/package/lodash" target="_blank">现代</a>, <a href="https://www.npmjs.com/package/lodash-compat" target="_blank">兼容</a>, &amp; <a href="https://www.npmjs.com/browse/keyword/lodash-modularized" target="_blank">单个方法</a> </li>
<li>AMD 构建格式: <a href="https://github.com/lodash/lodash/tree/3.10.1-amd" target="_blank">现代</a> &amp; <a href="https://github.com/lodash/lodash-compat/tree/3.10.1-amd" target="_blank">兼容</a></li>
<li>ES 构建格式: <a href="https://github.com/lodash/lodash/tree/3.10.1-es" target="_blank">现代</a></li>
</ul>
<p>CDN 服务在 <a href="https://cdnjs.com/" target="_blank">cdnjs</a> &amp; <a href="http://www.jsdelivr.com/" target="_blank">jsDelivr</a>，通过 <a href="./custom-builds">版本定制</a> 构建你需要的模块，在找更多的功能用法? 试试 <a href="https://www.npmjs.com/package/lodash-fp" target="_blank">lodash-fp</a></p>
<h2 id="-">深入了解</h2>
<p>查看我们的 <a href="https://github.com/lodash/lodash/wiki/Changelog" target="_blank">更新日志</a>, <a href="https://github.com/lodash/lodash/wiki/Roadmap" target="_blank">路线图</a>, 以及 <a href="https://github.com/lodash/lodash/wiki/Resources" target="_blank">社区里的播客、文章、视频</a>.</p>
<h2 id="-">兼容性</h2>
<p>在 Chrome 43-44, Firefox 38-39, IE 6-11, MS Edge, Safari 5-8, ChakraNode 0.12.2, Node.js 0.8.28, 0.10.40, 0.12.7, &amp; 4.0.0, PhantomJS 1.9.8, RingoJS 0.11, &amp; Rhino 1.7.6 测试通过</p>
<p><a href="https://saucelabs.com/u/lodash" target="_blank">自动化测试</a> &amp; <a href="https://travis-ci.org/lodash/" target="_blank">持续集成</a> 已在运作， 特别感谢 <a href="https://saucelabs.com/" target="_blank">Sauce Labs</a> 提供的浏览器自动化测试。</p>
</div>
</div>
<div data-render-page="default"><div data-render-html="/custom-builds"><h2 id="-">版本定制</h2>
<p>通过版本定制可以很轻松的定制仅包含你所需功能的 lodash 版本 。更棒的是，我们已经帮你处理好了函数依赖和别名对应，查看 <a href="https://github.com/lodash/lodash/wiki/build-differences" target="_blank">版本区别</a> &amp; 选择一个适合你的版本。</p>
<p>使用 Grunt? 我们准备了 <a href="https://npmjs.org/package/grunt-lodash" target="_blank">Grunt plugin</a> 协助构建 lodash。</p>
<p>安装 <a href="https://npmjs.org/package/lodash-cli" target="_blank">lodash-cli</a> 来作为 <code>lodash</code> 全局命令行工具:</p>
<pre><code>$ {sudo -H} npm i -g npm
$ {sudo -H} npm i -g lodash-cli
$ lodash -h
</code></pre><p><strong>注意:</strong> 请先卸载旧版本，再安装 <code>lodash-cli</code>。</p>
<ul>
<li>兼容版本构建，同时支持新旧运行环境，使用 <code>compat</code> 修饰。 <em>(默认)</em></li>
</ul>
<pre><code>lodash compat
</code></pre><ul>
<li>现代版本构建，针对新的环境，包括 <a href="https://es5.github.io/" target="_blank">ES5</a>/<a href="ttps://people.mozilla.org/~jorendorff/es6-draft.html">ES6</a> 支持，使用 <code>modern</code> 修饰。</li>
</ul>
<pre><code>lodash modern
</code></pre><ul>
<li>严格模式版本构建, 开启 <a href="https://es5.github.io/#C" target="_blank">ES 严格模式</a>，使用 <code>strict</code> 修饰。</li>
</ul>
<pre><code>lodash strict
</code></pre><ul>
<li>模块化版本构建，拆散 lodash 为各个模块，使用 <code>modularize</code> 修饰。</li>
</ul>
<pre><code>lodash modularize
</code></pre><p>构建命令:</p>
<ul>
<li>使用 <code>category</code> 命令以逗号分隔的方式传入需要的函数分类。可用的函数分类有： <em>“array”</em>, <em>“chain”</em>, <em>“collection”</em>, <em>“date”</em>, <em>“function”</em>, <em>“lang”</em>, <em>“object”</em>, <em>“number”</em>, <em>“string”</em>, &amp; <em>“utility”</em>=。</li>
</ul>
<pre><code>lodash category=collection,function
</code></pre><ul>
<li>使用 <code>exports</code> 命令以逗号分隔的方式传入导出 <code>lodash</code> 函数的方式，可用的方式有： <em>“amd”</em>, <em>“commonjs”</em>, <em>“es”</em>, <em>“global”</em>, <em>“iojs”</em>, <em>“node”</em>, <em>“npm”</em>, <em>“none”</em>, &amp; <em>“umd”</em>.</li>
</ul>
<pre><code>lodash exports=amd,commonjs,iojs
</code></pre><ul>
<li>使用 <code>iife</code> 命令指定代码替换 包裹 lodash 的 <a href="http://benalman.com/news/2010/11/immediately-invoked-function-expression/" target="_blank">IIFE</a>。</li>
</ul>
<pre><code>lodash iife=&quot;!function(window,undefined){%output%}(this)&quot;
</code></pre><ul>
<li>使用 <code>include</code> 命令以逗号分隔的方式传入需要包含的函数。</li>
</ul>
<pre><code>lodash include=each,filter,map
</code></pre><ul>
<li>使用 <code>minus</code> 命令以逗号分隔的方式传入需要删减的函数/分类。</li>
</ul>
<pre><code>lodash modern minus=result,shuffle
</code></pre><ul>
<li>使用 <code>plus</code> 命令以逗号分隔的方式传入需要补充的函数/分类。</li>
</ul>
<pre><code>lodash category=array plus=random,template
</code></pre><ul>
<li>使用 <code>template</code> 命令传入路径相匹配的文件生成预编译模板。 <strong>注意:</strong> 预编译模板分配在 <code>_.templates</code> 对象上。</li>
</ul>
<pre><code>lodash template=&quot;./*.jst&quot;
</code></pre><ul>
<li>使用 <code>settings</code> 命令设置预编译模板时的模板语法。</li>
</ul>
<pre><code>lodash settings=&quot;{interpolate:/\{\{([\s\S]+?)\}\}/g}&quot;
</code></pre><ul>
<li>使用 <code>moduleId</code> 命令指定 lodash 的 AMD module ID 或 包含 lodash 的编译模板的 module ID。指定为 <code>none</code> 表示创建编译模板不依赖 lodash。</li>
</ul>
<pre><code>lodash moduleId=underscore
</code></pre><p><strong>注意:</strong></p>
<ul>
<li>所有命令可以组合（除了 <code>compat</code> &amp; <code>modern</code>）</li>
<li><code>exports</code> 的值 <em>“es”</em> &amp; <em>“npm”</em> 只能与 <code>modularize</code> 命令联用。</li>
<li><code>modularize</code> 命令使用最先的 <code>exports</code> 的值作为模块格式，忽略后续的值。</li>
<li>除非指定 <code>-o</code> 或 <code>--output</code>，不然所有文件会保存在当前工作目录。</li>
<li>Node.js 0.10.8-0.10.11 <a href="https://github.com/joyent/node/issues/5622" target="_blank">存在</a> <a href="https://github.com/joyent/node/issues/5688" target="_blank">bugs</a> 导致无法最小化构建。</li>
</ul>
<p>另外还支持以下选项：</p>
<pre><code>-c, --stdout .......... 输出到stdout(译注：类似直接输出在终端那样)
-d, --development ..... 输出非最小化的开发代码
-h, --help ............ 显示帮助信息
-m, --source-map ...... 生成source-map文件
-o, --output .......... 指定输出的路径/文件名
-p, --production ...... 输出最小化后的产品代码
-s, --silent .......... 不显示常规的日志输出
-V, --version ......... 显示当前的 lodash 版本号
</code></pre></div>
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<div class="signature">_.chunk(array, [size&#x3D;0])</div>

<div data-render-html="/chunk"><p>将数组拆分成多个 size 长度的块，并组成一个新数组。
如果数组无法被分割成全部等长的块，那么最后剩余的元素将组成一个块。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要被处理的数组 </p>
</div></li>
<li><span class="param-name">[size&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>每个块的长度 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个拆分好的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >chunk</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'d'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['a', 'b'], ['c', 'd']]</span>

_<span class="token punctuation" >.</span><span class="token function" >chunk</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'d'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['a', 'b', 'c'], ['d']]</span>
</code></pre>
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<div class="signature">_.compact(array)</div>

<div data-render-html="/compact"><p>创建一个移除了所有假值的数组。例如：<code>false</code>、<code>null</code>、
<code>0</code>、<code>&quot;&quot;</code>、<code>undefined</code>， 以及<code>NaN</code> 都是 “假值”.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要被处理的数组。 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回移除了假值的数组。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >compact</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >''</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>concat <a class="fa-link" href="./concat" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5574" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.concat" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.concat(array, [values])</div>

<div data-render-html="/concat"><p>创建一个用任何数组 或 值连接的新数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要被连接的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>需要被连接的值的队列 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回连接后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >concat</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>other<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3, [4]]</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1]</span>
</code></pre>
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<div class="signature">_.difference(array, [values])</div>

<div data-render-html="/difference"><p>创建一个差异化后的数组，不包括使用 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 方法提供的数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>用于对比差异的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个差异化后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >difference</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>differenceBy <a class="fa-link" href="./differenceBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5621" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.differenceby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.differenceBy(array, [values], [iteratee&#x3D;_.identity])</div>

<div data-render-html="/differenceBy"><p>这个方法类似 <code>_.difference</code>，除了它接受一个 iteratee 调用每一个数组和值。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>用于对比差异的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个差异化后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >differenceBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >3.1</span><span class="token punctuation" >,</span> <span class="token number" >2.2</span><span class="token punctuation" >,</span> <span class="token number" >1.3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4.4</span><span class="token punctuation" >,</span> <span class="token number" >2.5</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3.1, 1.3]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >differenceBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>differenceWith <a class="fa-link" href="./differenceWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5648" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.differencewith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.differenceWith(array, [values], [comparator])</div>

<div data-render-html="/differenceWith"><p>这个方法类似 <code>_.difference</code>，除了它接受一个 comparator 调用每一个数组元素的值。 comparator 会传入2个参数：(arrVal, othVal)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>用于对比差异的数组 </p>
</div></li>
<li><span class="param-name">[comparator]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个差异化后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >differenceWith</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isEqual<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 2, 'y': 1 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>drop <a class="fa-link" href="./drop" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5682" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.drop" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.drop(array, [n&#x3D;1])</div>

<div data-render-html="/drop"><p>裁剪数组中的前 N 个数组，返回剩余的部分。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[n&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>裁剪的个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组的剩余的部分。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >drop</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 3]</span>

_<span class="token punctuation" >.</span><span class="token function" >drop</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3]</span>

_<span class="token punctuation" >.</span><span class="token function" >drop</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>

_<span class="token punctuation" >.</span><span class="token function" >drop</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>dropRight <a class="fa-link" href="./dropRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5715" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.dropright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.dropRight(array, [n&#x3D;1])</div>

<div data-render-html="/dropRight"><p>从右边开始裁剪数组中的 N 个数组，返回剩余的部分。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[n&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>裁剪的个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组的剩余的部分。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >dropRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

_<span class="token punctuation" >.</span><span class="token function" >dropRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1]</span>

_<span class="token punctuation" >.</span><span class="token function" >dropRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>

_<span class="token punctuation" >.</span><span class="token function" >dropRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>dropRightWhile <a class="fa-link" href="./dropRightWhile" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5759" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.droprightwhile" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.dropRightWhile(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/dropRightWhile"><p>从右边开始裁剪数组，起点从 <code>predicate</code> 返回假值开始。<code>predicate</code> 会传入3个参数：(value, index, array)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会在每一次迭代调用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回裁剪后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> resolve <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partial</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>map<span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token string" >'user'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >dropRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >dropRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney', 'fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >dropRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >dropRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney', 'fred', 'pebbles']</span>
</code></pre>
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<div data-render-page="entry"><h2>dropWhile <a class="fa-link" href="./dropWhile" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5797" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.dropwhile" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.dropWhile(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/dropWhile"><p>裁剪数组，起点从 <code>predicate</code> 返回假值开始。<code>predicate</code> 会传入3个参数：(value, index, array)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>array 需要处理的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会在每一次迭代调用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> Returns the slice of <code>array</code>.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >dropWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >dropWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['fred', 'pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >dropWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >dropWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['barney', 'fred', 'pebbles']</span>
</code></pre>
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<div data-render-page="entry"><h2>fill <a class="fa-link" href="./fill" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5830" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.fill" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.fill(array, value, [start&#x3D;0], [end&#x3D;array.length])</div>

<div data-render-html="/fill"><p>指定 <code>值</code> 填充数组，从 <code>start</code> 到 <code>end</code> 的位置，但不包括 <code>end</code> 本身的位置。
<br>
<br>
<strong>注意:</strong> 这个方法会改变数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要填充的数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>填充的值 </p>
</div></li>
<li><span class="param-name">[start&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>开始位置 </p>
</div></li>
<li><span class="param-name">[end&#x3D;array.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>结束位置 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >fill</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'a', 'a']</span>

_<span class="token punctuation" >.</span><span class="token function" >fill</span><span class="token punctuation" >(</span><span class="token function" >Array</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 2, 2]</span>

_<span class="token punctuation" >.</span><span class="token function" >fill</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token number" >10</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'*'</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, '*', '*', 10]</span>
</code></pre>
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<div data-render-page="entry"><h2>findIndex <a class="fa-link" href="./findIndex" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5874" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.findindex" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.findIndex(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/findIndex"><p>这个方法类似 <code>_.find</code>。除了它返回最先通过 <code>predicate</code> 判断为真值的元素的 index ，而不是元素本身。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要搜索的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会在每一次迭代调用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回符合元素的 index，否则返回 <code>-1</code>。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >findIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>user <span class="token operator" >==</span> <span class="token string" >'barney'</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>
</code></pre>
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<div data-render-page="entry"><h2>findLastIndex <a class="fa-link" href="./findLastIndex" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5912" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.findlastindex" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.findLastIndex(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/findLastIndex"><p>这个方式类似 <code>_.findIndex</code> ， 不过它是从右到左的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要搜索的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会在每一次迭代调用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回符合元素的 index，否则返回 <code>-1</code>。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >findLastIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>user <span class="token operator" >==</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastIndex</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>
</code></pre>
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<div data-render-page="entry"><h2>flatten <a class="fa-link" href="./flatten" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5931" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flatten" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flatten(array)</div>

<div data-render-html="/flatten"><p>向上一级展平数组嵌套</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要展平的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回展平后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >flatten</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, [3, [4]], 5]</span>
</code></pre>
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<div data-render-page="entry"><h2>flattenDeep <a class="fa-link" href="./flattenDeep" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5949" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flattendeep" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flattenDeep(array)</div>

<div data-render-html="/flattenDeep"><p>递归展平 <code>数组</code>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要展平的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回展平后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >flattenDeep</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3, 4, 5]</span>
</code></pre>
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<div data-render-page="entry"><h2>flattenDepth <a class="fa-link" href="./flattenDepth" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5973" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flattendepth" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flattenDepth(array, [depth&#x3D;1])</div>

<div data-render-html="/flattenDepth"><p>根据 <code>depth</code> 递归展平 <code>数组</code> 的层级</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要展平的数组 </p>
</div></li>
<li><span class="param-name">[depth&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>展平的层级 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回展平后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >flattenDepth</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, [3, [4]], 5]</span>

_<span class="token punctuation" >.</span><span class="token function" >flattenDepth</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3, [4], 5]</span>
</code></pre>
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<div data-render-page="entry"><h2>fromPairs <a class="fa-link" href="./fromPairs" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L5995" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.frompairs" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.fromPairs(pairs)</div>

<div data-render-html="/fromPairs"><p>反向版 <code>_.toPairs</code>，这个方法返回一个由键值对构成的对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">pairs</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>键值对 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >fromPairs</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token number" >30</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token number" >40</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'fred': 30, 'barney': 40 }</span>
</code></pre>
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<div data-render-page="entry"><h2>head <span class="aliases">first</span> <a class="fa-link" href="./head" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6024" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.head" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.head(array)</div>

<div data-render-html="/head"><p>获得数组的首个元素</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要检索的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中的首个元素</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >head</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>

_<span class="token punctuation" >.</span><span class="token function" >head</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => undefined</span>
</code></pre>
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<div data-render-page="entry"><h2>indexOf <a class="fa-link" href="./indexOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6047" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.indexof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.indexOf(array, value, [fromIndex&#x3D;0])</div>

<div data-render-html="/indexOf"><p>根据 value 使用 SameValueZero 等值比较返回数组中首次匹配的 index， 如果 fromIndex 为负值，将从数组尾端索引进行匹配，如果将 fromIndex 设置为 true，将使用更快的二进制检索机制。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要检索的数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检索的值 </p>
</div></li>
<li><span class="param-name">[fromIndex&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>需要检索的起始位置，如果为 true 将使用二进制检索方式。 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配值的index，否则返回 -1。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >indexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>

<span class="token comment" spellcheck="true">// 使用了 `fromIndex`</span>
_<span class="token punctuation" >.</span><span class="token function" >indexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>initial <a class="fa-link" href="./initial" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6072" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.initial" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.initial()</div>

<div data-render-html="/initial"><p>获取数组中除了最后一个元素之外的所有元素</p>
</div>

<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回没有最后一个元素的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >initial</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>intersection <a class="fa-link" href="./intersection" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6089" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.intersection" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.intersection([arrays])</div>

<div data-render-html="/intersection"><p>创建一个包含所有使用 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 进行等值比较后筛选的唯一值数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组队列 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中所有数组共享元素的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >intersection</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2]</span>
</code></pre>
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<div data-render-page="entry"><h2>intersectionBy <a class="fa-link" href="./intersectionBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6114" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.intersectionby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.intersectionBy([arrays], [iteratee&#x3D;_.identity])</div>

<div data-render-html="/intersectionBy"><p>这个方法类似 <code>_.intersection</code>，除了它接受一个 iteratee 调用每一个数组和值。iteratee 会传入一个参数：(value)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要检索的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中共享元素的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >intersectionBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2.1</span><span class="token punctuation" >,</span> <span class="token number" >1.2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4.3</span><span class="token punctuation" >,</span> <span class="token number" >2.4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2.1]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >intersectionBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>intersectionWith <a class="fa-link" href="./intersectionWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6145" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.intersectionwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.intersectionWith([arrays], [comparator])</div>

<div data-render-html="/intersectionWith"><p>这个方法类似 <code>_.intersection</code>，除了它接受一个 comparator 调用每一个数组和值。iteratee 会传入2个参数：((arrVal, othVal)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要检索的数组 </p>
</div></li>
<li><span class="param-name">[comparator]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中共享元素的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> others <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >intersectionWith</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> others<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isEqual<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1, 'y': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>join <a class="fa-link" href="./join" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6173" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.join" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.join(array, [separator&#x3D;&#x27;,&#x27;])</div>

<div data-render-html="/join"><p>将数组中的所有元素转换为由 <code>separator</code> 分隔的字符串。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要转换的数组 </p>
</div></li>
<li><span class="param-name">[separator&#x3D;&#x27;,&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>分隔符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回连接好的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >join</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'~'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'a~b~c'</span>
</code></pre>
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<div data-render-page="entry"><h2>last <a class="fa-link" href="./last" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6190" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.last" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.last(array)</div>

<div data-render-html="/last"><p>获取数组中的最后一个元素</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要检索的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中的最后一个元素</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >last</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>lastIndexOf <a class="fa-link" href="./lastIndexOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6218" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.lastindexof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.lastIndexOf(array, value, [fromIndex&#x3D;array.length-1])</div>

<div data-render-html="/lastIndexOf"><p>这个方法类似  <code>_.indexOf</code>，除了它是从右到左遍历元素的。
这个方法类似 <code>_.indexOf</code> except that it iterates over elements of
<code>array</code> from right to left.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检索的值 </p>
</div></li>
<li><span class="param-name">[fromIndex&#x3D;array.length-1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>检索 index 的起点  </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配元素的 index，否则返回 -1</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >lastIndexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

<span class="token comment" spellcheck="true">// 使用了 `fromIndex`</span>
_<span class="token punctuation" >.</span><span class="token function" >lastIndexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.reverse <a class="fa-link" href="./prototype-reverse" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6405" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.reverse" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.reverse()</div>

<div data-render-html="/prototype-reverse"><p>反转数组，第一个元素移动到最后一位，第二个元素移动到倒数第二，类似这样。
<br>
<br>
<strong>注意:</strong> 这个方法会改变数组，根据 <a href="https://mdn.io/Array/reverse" target="_blank"><code>Array#reverse</code></a></p>
</div>

<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回原数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >reverse</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 2, 1]</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 2, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>pull <a class="fa-link" href="./pull" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6258" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pull" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pull(array, [values])</div>

<div data-render-html="/pull"><p>移除所有经过 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 等值比较为 true 的元素
<br>
<br>
<strong>注意:</strong> 不同于 <code>_.without</code>，这个方法会改变数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要调整的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>要移除的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组本身</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >pull</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>pullAll <a class="fa-link" href="./pullAll" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6279" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pullall" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pullAll(array, values)</div>

<div data-render-html="/pullAll"><p>这个方式类似 <code>_.pull</code>，除了它接受数组形式的一系列值。
<br>
<br>
<strong>注意:</strong> 不同于 <code>_.difference</code>，这个方法会改变数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要调整的数组 </p>
</div></li>
<li><span class="param-name">values</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要移除的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组本身</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >pullAll</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>pullAllBy <a class="fa-link" href="./pullAllBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6305" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pullallby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pullAllBy(array, values, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/pullAllBy"><p>这个方法类似 <code>_.pullAll</code>，除了它接受一个 comparator 调用每一个数组元素的值。 comparator 会传入一个参数：(value)。
<br>
<br>
<strong>注意:</strong> 不同于 <code>_.differenceBy</code>，这个方法会改变数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要调整的数组 </p>
</div></li>
<li><span class="param-name">values</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要移除的值 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组本身</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >pullAllBy</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>pullAt <a class="fa-link" href="./pullAt" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6334" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pullat" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pullAt(array, [indexes])</div>

<div data-render-html="/pullAt"><p>根据给的 <code>indexes</code> 移除对应的数组元素并返回被移除的元素。
<br>
<br>
<strong>注意:</strong> 不同于 <code>_.at</code>，这个方法会改变数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要调整的数组 </p>
</div></li>
<li><span class="param-name">[indexes]</span> <span class="param-type">(...(number|number[])</span> <div data-render-html="/#synthetic"><p>indexes 可以是特殊的数组队列，或者个别的单个或多个参数  </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回被移除的元素数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token number" >15</span><span class="token punctuation" >,</span> <span class="token number" >20</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> evens <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >pullAt</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [5, 15]</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>evens<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [10, 20]</span>
</code></pre>
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<div data-render-page="entry"><h2>remove <a class="fa-link" href="./remove" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6366" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.remove" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.remove(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/remove"><p>移除经过 <code>predicate</code> 处理为真值的元素，并返回被移除的元素。predicate 会传入3个参数：(value, index, array)
<br>
<br>
<strong>注意:</strong> Unlike <code>_.filter</code>，这个方法会改变数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要调整的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回被移除的元素的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> evens <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >remove</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >%</span> <span class="token number" >2</span> <span class="token operator" >==</span> <span class="token number" >0</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 3]</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>evens<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 4]</span>
</code></pre>
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<div data-render-page="entry"><h2>slice <a class="fa-link" href="./slice" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6423" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.slice" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.slice(array, [start&#x3D;0], [end&#x3D;array.length])</div>

<div data-render-html="/slice"><p>创建一个裁剪后的数组，从 start 到 end 的位置，但不包括 end 本身的位置。
<br>
<br>
<strong>注意:</strong> 这个方法用于代替 <a href="https://mdn.io/Array/slice" target="_blank"><code>Array#slice</code></a>
来确保数组正确返回</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要裁剪的数组 </p>
</div></li>
<li><span class="param-name">[start&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>开始位置 </p>
</div></li>
<li><span class="param-name">[end&#x3D;array.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>结束位置 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回裁剪后的数组</p>
</div></div>
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<div data-render-page="entry"><h2>sortedIndex <a class="fa-link" href="./sortedIndex" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6457" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedindex" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedIndex(array, value)</div>

<div data-render-html="/sortedIndex"><p>使用二进制的方式检索来决定 value 应该插入在数组中位置。它的 index 应该尽可能的小以保证数组的排序。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的已排序数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 value 应该在数组中插入的 index。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedIndex</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >30</span><span class="token punctuation" >,</span> <span class="token number" >50</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >40</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>

_<span class="token punctuation" >.</span><span class="token function" >sortedIndex</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedIndexBy <a class="fa-link" href="./sortedIndexBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6482" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedindexby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedIndexBy(array, value, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/sortedIndexBy"><p>这个方法类似 <code>_.sortedIndex</code>，除了它接受一个 iteratee 调用每一个数组和值来计算排序。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的已排序数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 value 应该在数组中插入的 index。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> dict <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'thirty'</span><span class="token punctuation" >:</span> <span class="token number" >30</span><span class="token punctuation" >,</span> <span class="token string" >'forty'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'fifty'</span><span class="token punctuation" >:</span> <span class="token number" >50</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >sortedIndexBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'thirty'</span><span class="token punctuation" >,</span> <span class="token string" >'fifty'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'forty'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >propertyOf</span><span class="token punctuation" >(</span>dict<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >sortedIndexBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >5</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedIndexOf <a class="fa-link" href="./sortedIndexOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6500" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedindexof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedIndexOf(array, value)</div>

<div data-render-html="/sortedIndexOf"><p>这个方法类似 <code>_.indexOf</code>，除了它是执行二进制来检索已经排序的数组的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配值的 index ，否则返回 <code>-1</code>.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedIndexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedLastIndex <a class="fa-link" href="./sortedLastIndex" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6525" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedlastindex" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedLastIndex(array, value)</div>

<div data-render-html="/sortedLastIndex"><p>这个方法类似 <code>_.sortedIndex</code>，除了它返回在 value 中尽可能大的 index 位置。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的已排序数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 value 应该在数组中插入的 index。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedLastIndex</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedLastIndexBy <a class="fa-link" href="./sortedLastIndexBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6545" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedlastindexby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedLastIndexBy(array, value, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/sortedLastIndexBy"><p>这个方法类似 <code>_.sortedLastIndex</code>，除了它接受一个 iteratee 调用每一个数组和值来计算排序。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的已排序数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 value 应该在数组中插入的 index。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >sortedLastIndexBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >5</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedLastIndexOf <a class="fa-link" href="./sortedLastIndexOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6563" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortedlastindexof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedLastIndexOf(array, value)</div>

<div data-render-html="/sortedLastIndexOf"><p>这个方法类似 <code>_.lastIndexOf</code>，除了它是执行二进制来检索已经排序的数组的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要检索的数组 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要评估位置的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配值的 index ，否则返回 -1.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedLastIndexOf</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedUniq <a class="fa-link" href="./sortedUniq" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6587" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sorteduniq" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedUniq(array)</div>

<div data-render-html="/sortedUniq"><p>这个方法类似 <code>_.uniq</code>，除了它会排序并优化数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要调整的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个不重复的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedUniq</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>sortedUniqBy <a class="fa-link" href="./sortedUniqBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6607" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sorteduniqby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortedUniqBy(array, [iteratee])</div>

<div data-render-html="/sortedUniqBy"><p>这个方法类似 <code>_.uniqBy</code>，除了它接受一个 iteratee 调用每一个数组和值来排序并优化数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要调整的数组 </p>
</div></li>
<li><span class="param-name">[iteratee]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个不重复的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sortedUniqBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1.1</span><span class="token punctuation" >,</span> <span class="token number" >1.2</span><span class="token punctuation" >,</span> <span class="token number" >2.3</span><span class="token punctuation" >,</span> <span class="token number" >2.4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1.1, 2.3]</span>
</code></pre>
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<div data-render-page="entry"><h2>tail <a class="fa-link" href="./tail" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6626" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tail" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.tail(array)</div>

<div data-render-html="/tail"><p>获取数组中除了第一个元素的剩余数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要检索的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组中除了第一个元素的剩余数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >tail</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>take <a class="fa-link" href="./take" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6654" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.take" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.take(array, [n&#x3D;1])</div>

<div data-render-html="/take"><p>从数组的起始元素开始提取 N 个元素。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[n&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要提取的个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回提取的元素数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >take</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1]</span>

_<span class="token punctuation" >.</span><span class="token function" >take</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

_<span class="token punctuation" >.</span><span class="token function" >take</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

_<span class="token punctuation" >.</span><span class="token function" >take</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>takeRight <a class="fa-link" href="./takeRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6686" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.takeright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.takeRight(array, [n&#x3D;1])</div>

<div data-render-html="/takeRight"><p>从数组的结束元素开始提取 N 个数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[n&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要提取的个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回提取的元素数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >takeRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3]</span>

_<span class="token punctuation" >.</span><span class="token function" >takeRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 3]</span>

_<span class="token punctuation" >.</span><span class="token function" >takeRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

_<span class="token punctuation" >.</span><span class="token function" >takeRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>takeRightWhile <a class="fa-link" href="./takeRightWhile" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6728" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.takerightwhile" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.takeRightWhile(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/takeRightWhile"><p>从数组的最右边开始提取数组，直到 <code>predicate</code> 返回假值。<code>predicate</code> 会传入三个参数：(value, index, array)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回提取的元素数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >takeRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果:  ['fred', 'pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果:  ['pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果:  ['fred', 'pebbles']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeRightWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>takeWhile <a class="fa-link" href="./takeWhile" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6766" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.takewhile" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.takeWhile(array, [predicate&#x3D;_.identity])</div>

<div data-render-html="/takeWhile"><p>从数组的开始提取数组，直到 predicate 返回假值。predicate 会传入三个参数：(value, index, array)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回提取的元素数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span><span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >takeWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => objects for ['barney', 'fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// =>结果: ['barney']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// =>结果: ['barney', 'fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调处理</span>
_<span class="token punctuation" >.</span><span class="token function" >takeWhile</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>union <a class="fa-link" href="./union" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6785" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.union" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.union([arrays])</div>

<div data-render-html="/union"><p>创建顺序排列的唯一值组成的数组。所有值经过 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 等值比较。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组队列 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理好的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >union</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 1, 4]</span>
</code></pre>
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<div data-render-page="entry"><h2>unionBy <a class="fa-link" href="./unionBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6807" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unionby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unionBy([arrays], [iteratee&#x3D;_.identity])</div>

<div data-render-html="/unionBy"><p>这个方法类似 <code>_.union</code>，除了它接受一个 iteratee 调用每一个数组和值。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组队列 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理好的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >unionBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2.1</span><span class="token punctuation" >,</span> <span class="token number" >1.2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4.3</span><span class="token punctuation" >,</span> <span class="token number" >2.4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2.1, 1.2, 4.3]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >unionBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1 }, { 'x': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>unionWith <a class="fa-link" href="./unionWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6833" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unionwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unionWith([arrays], [comparator])</div>

<div data-render-html="/unionWith"><p>这个方法类似 <code>_.union</code>，
除了它接受一个 comparator 调用每一个数组元素的值。 comparator 会传入2个参数：(arrVal, othVal)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组队列 </p>
</div></li>
<li><span class="param-name">[comparator]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理好的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> others <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >unionWith</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> others<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isEqual<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>uniq <a class="fa-link" href="./uniq" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6854" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.uniq" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.uniq(array)</div>

<div data-render-html="/uniq"><p>创建一个不重复的数组副本。使用了 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 等值比较。只有首次出现的元素才会被保留。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回不重复的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >uniq</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>uniqBy <a class="fa-link" href="./uniqBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6878" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.uniqby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.uniqBy(array, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/uniqBy"><p>这个方法类似 <code>_.uniq</code>，除了它接受一个 iteratee 调用每一个数组和值来计算唯一性。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回不重复的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >uniqBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2.1</span><span class="token punctuation" >,</span> <span class="token number" >1.2</span><span class="token punctuation" >,</span> <span class="token number" >2.3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2.1, 1.2]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >uniqBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1 }, { 'x': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>uniqWith <a class="fa-link" href="./uniqWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6900" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.uniqwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.uniqWith(array, [comparator])</div>

<div data-render-html="/uniqWith"><p>这个方法类似 <code>_.uniq</code>，除了它接受一个 <code>comparator</code> 来比较计算唯一性。 <code>comparator</code> 会传入2个参数：(arrVal, othVal)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要处理的数组 </p>
</div></li>
<li><span class="param-name">[comparator]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回不重复的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>  <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >uniqWith</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isEqual<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>unzip <a class="fa-link" href="./unzip" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6922" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unzip" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unzip(array)</div>

<div data-render-html="/unzip"><p>这个方法类似 <code>_.zip</code>，除了它接收一个打包后的数组并且还原为打包前的状态。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要解包的已打包数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个解包后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> zipped <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >zip</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'barney'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >30</span><span class="token punctuation" >,</span> <span class="token number" >40</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token keyword" >true</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['fred', 30, true], ['barney', 40, false]]</span>

_<span class="token punctuation" >.</span><span class="token function" >unzip</span><span class="token punctuation" >(</span>zipped<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['fred', 'barney'], [30, 40], [true, false]]</span>
</code></pre>
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<div data-render-page="entry"><h2>unzipWith <a class="fa-link" href="./unzipWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6955" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unzipwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unzipWith(array, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/unzipWith"><p>这个方法类似 <code>_.unzip</code>，除了它接受一个 iteratee 来决定如何重组解包后的数组。iteratee 会传入4个参数：(accumulator, value, index, group)。每组的第一个元素作为初始化的值</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>需要解包的已打包数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>决定如何重组解包后的元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个解包后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> zipped <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >zip</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token number" >20</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >100</span><span class="token punctuation" >,</span> <span class="token number" >200</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [[1, 10, 100], [2, 20, 200]]</span>

_<span class="token punctuation" >.</span><span class="token function" >unzipWith</span><span class="token punctuation" >(</span>zipped<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>add<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 30, 300]</span>
</code></pre>
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<div data-render-page="entry"><h2>without <a class="fa-link" href="./without" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L6982" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.without" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.without(array, [values])</div>

<div data-render-html="/without"><p>创建一个移除了所有提供的 values 的数组。使用了 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 等值比较。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组 </p>
</div></li>
<li><span class="param-name">[values]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>要排除的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个处理好的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >without</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3]</span>
</code></pre>
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<div data-render-page="entry"><h2>xor <a class="fa-link" href="./xor" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7001" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.xor" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.xor([arrays])</div>

<div data-render-html="/xor"><p>创建一个包含了所有唯一值的数组。使用了 <a href="https://en.wikipedia.org/wiki/Symmetric_difference" target="_blank">symmetric difference</a> 等值比较。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 包含了所有唯一值的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >xor</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 4]</span>
</code></pre>
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<div data-render-page="entry"><h2>xorBy <a class="fa-link" href="./xorBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7023" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.xorby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.xorBy([arrays], [iteratee&#x3D;_.identity])</div>

<div data-render-html="/xorBy"><p>这个方法类似 <code>_.xor</code>，除了它接受一个 iteratee 调用每一个数组和值。iteratee 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 包含了所有唯一值的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >xorBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2.1</span><span class="token punctuation" >,</span> <span class="token number" >1.2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4.3</span><span class="token punctuation" >,</span> <span class="token number" >2.4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1.2, 4.3]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >xorBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'x'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 2 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>xorWith <a class="fa-link" href="./xorWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7048" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.xorwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.xorWith([arrays], [comparator])</div>

<div data-render-html="/xorWith"><p>这个方法类似 <code>_.xor</code>，除了它接受一个 comparator 调用每一个数组元素的值。 comparator 会传入2个参数：(arrVal, othVal)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组 </p>
</div></li>
<li><span class="param-name">[comparator]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 包含了所有唯一值的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> others <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >xorWith</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> others<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isEqual<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>zip <a class="fa-link" href="./zip" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7069" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.zip" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.zip([arrays])</div>

<div data-render-html="/zip"><p>创建一个打包所有元素后的数组。第一个元素包含所有提供数组的第一个元素，第二个包含所有提供数组的第二个元素，以此类推。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组队列 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个打包后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >zip</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'barney'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >30</span><span class="token punctuation" >,</span> <span class="token number" >40</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token keyword" >true</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['fred', 30, true], ['barney', 40, false]]</span>
</code></pre>
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<div data-render-page="entry"><h2>zipObject <a class="fa-link" href="./zipObject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7085" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.zipobject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.zipObject([props&#x3D;[]], [values&#x3D;[]])</div>

<div data-render-html="/zipObject"><p>这个方法类似 <code>_.fromPairs</code>，除了它接受2个数组，一个作为属性名，一个作为属性值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[props&#x3D;[]]</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>属性名 </p>
</div></li>
<li><span class="param-name">[values&#x3D;[]]</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>属性值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个新的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >zipObject</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2 }</span>
</code></pre>
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<div data-render-page="entry"><h2>zipObjectDeep <a class="fa-link" href="./zipObjectDeep" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7105" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.zipobjectdeep" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.zipObjectDeep([props&#x3D;[]], [values&#x3D;[]])</div>

<div data-render-html="/zipObjectDeep"><p>这个方法类似 <code>_.zipObject</code>，除了它支持属性路径。
This method is like <code>_.zipObject</code> except that it supports property paths.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[props&#x3D;[]]</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>属性名 </p>
</div></li>
<li><span class="param-name">[values&#x3D;[]]</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>属性值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >zipObjectDeep</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a.b[0].c'</span><span class="token punctuation" >,</span> <span class="token string" >'a.b[1].d'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }</span>
</code></pre>
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<div data-render-page="entry"><h2>zipWith <a class="fa-link" href="./zipWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7127" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.zipwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.zipWith([arrays])</div>

<div data-render-html="/zipWith"><p>这个方法类似 _.zip，
除了它接受一个 iteratee 决定如何重组值。
iteratee 会调用每一组元素。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[arrays]</span> <span class="param-type">(...Array)</span> <div data-render-html="/#synthetic"><p>要处理的数组队列 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个打包后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >zipWith</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token number" >20</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >100</span><span class="token punctuation" >,</span> <span class="token number" >200</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> a <span class="token operator" >+</span> b <span class="token operator" >+</span> c<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [111, 222]</span>
</code></pre>
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<div data-render-page="entry"><h2>countBy <a class="fa-link" href="./countBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7504" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.countby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.countBy(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/countBy"><p>创建一个组成对象，key是经过 <code>iteratee</code> 处理的集合的结果，value 是处理结果的次数。 <code>iteratee</code> 会传入一个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个组成汇总的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >countBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >6.1</span><span class="token punctuation" >,</span> <span class="token number" >4.2</span><span class="token punctuation" >,</span> <span class="token number" >6.3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '4': 1, '6': 2 }</span>

_<span class="token punctuation" >.</span><span class="token function" >countBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'one'</span><span class="token punctuation" >,</span> <span class="token string" >'two'</span><span class="token punctuation" >,</span> <span class="token string" >'three'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'length'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '3': 2, '5': 1 }</span>
</code></pre>
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<div data-render-page="entry"><h2>every <a class="fa-link" href="./every" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7541" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.every" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.every(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/every"><p>通过 <code>predicate</code> 检查集合中的元素是否都返回 真值，只要 <code>predicate</code> 返回一次假值，遍历就停止，并返回 false。
<code>predicate</code> 会传入3个参数：(value, index|key, collection)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 true，如果所有元素经 predicate 检查都为真值，否则返回 false。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >every</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token keyword" >true</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token keyword" >null</span><span class="token punctuation" >,</span> <span class="token string" >'yes'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Boolean<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

<span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >every</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >every</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >every</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>filter <a class="fa-link" href="./filter" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7582" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.filter" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.filter(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/filter"><p>遍历集合中的元素，筛选出一个经过 <code>predicate</code> 检查结果为真值的数组，predicate 会传入3个参数：(value, index|key, collection)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回筛选结果的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> resolve <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partial</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>map<span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token string" >'user'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
<span class="token function" >resolve</span><span class="token punctuation" >(</span> _<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span> <span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney']</span>
</code></pre>
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<div data-render-page="entry"><h2>find <a class="fa-link" href="./find" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7619" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.find" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.find(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/find"><p>遍历集合中的元素，返回最先经 <code>predicate</code> 检查为真值的元素。 predicate 会传入3个元素：(value, index|key, collection)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要检索的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配元素，否则返回 <code>undefined</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >find</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>age <span class="token operator" >&lt;</span> <span class="token number" >40</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: 'barney'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >find</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: 'pebbles'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >find</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: 'fred'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >find</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: 'barney'</span>
</code></pre>
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<div data-render-page="entry"><h2>findLast <a class="fa-link" href="./findLast" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7644" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.findlast" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.findLast(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/findLast"><p>这个方法类似 <code>_.find</code>，除了它是从右至左遍历集合的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要检索的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配元素，否则返回 <code>undefined</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >findLast</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >%</span> <span class="token number" >2</span> <span class="token operator" >==</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>flatMap <a class="fa-link" href="./flatMap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7672" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flatmap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flatMap(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/flatMap"><p>创建一个扁平化的数组，每一个值会传入 iteratee 处理，处理结果会与值合并。
iteratee 会传入3个参数：(value, index|key, array)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会在每一次迭代调用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >duplicate</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>n<span class="token punctuation" >,</span> n<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

_<span class="token punctuation" >.</span><span class="token function" >flatMap</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> duplicate<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1, 2, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>forEach <span class="aliases">each</span> <a class="fa-link" href="./forEach" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7702" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.foreach" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forEach(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forEach"><p>调用 iteratee 遍历集合中的元素，
iteratee 会传入3个参数：(value, index|key, collection)。
如果显式的返回 false ，iteratee 会提前退出。
<br>
<br>
<strong>注意:</strong> 与其他集合方法一样，对象的 length 属性也会被遍历，避免这种情况，可以用 <em>.forIn 或者 </em>.forOwn 代替。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array|Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回集合</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >forEach</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 `1` 和 `2`</span>

_<span class="token punctuation" >.</span><span class="token function" >forEach</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 'a' 和 'b' (不保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>forEachRight <span class="aliases">eachRight</span> <a class="fa-link" href="./forEachRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7725" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.foreachright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forEachRight(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forEachRight"><p>这个方法类似 <code>_.forEach</code>，除了它是从右到左遍历的集合中的元素的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array|Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回集合</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >forEachRight</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 `2` 和 `1`</span>
</code></pre>
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<div data-render-page="entry"><h2>groupBy <a class="fa-link" href="./groupBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7749" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.groupby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.groupBy(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/groupBy"><p>创建一个对象组成，key 是经 iteratee 处理的结果， value 是产生 key 的元素数组。 iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个组成汇总的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >groupBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >6.1</span><span class="token punctuation" >,</span> <span class="token number" >4.2</span><span class="token punctuation" >,</span> <span class="token number" >6.3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>floor<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '4': [4.2], '6': [6.1, 6.3] }</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >groupBy</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'one'</span><span class="token punctuation" >,</span> <span class="token string" >'two'</span><span class="token punctuation" >,</span> <span class="token string" >'three'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'length'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '3': ['one', 'two'], '5': ['three'] }</span>
</code></pre>
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<div data-render-page="entry"><h2>includes <a class="fa-link" href="./includes" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7785" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.includes" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.includes(collection, value, [fromIndex&#x3D;0])</div>

<div data-render-html="/includes"><p>检查 值 是否在 集合中，如果集合是字符串，那么检查 值 是否在字符串中。
其他情况用 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 等值比较。
如果指定 <code>fromIndex</code> 是负数，从结尾开始检索。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object|string)</span> <div data-render-html="/#synthetic"><p>要检索的集合 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检索的值 </p>
</div></li>
<li><span class="param-name">[fromIndex&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要检索的 index 位置 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果找到 value 返回 ture， 否则返回 false。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >includes</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >includes</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >includes</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >includes</span><span class="token punctuation" >(</span><span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'eb'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>invokeMap <a class="fa-link" href="./invokeMap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7818" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.invokemap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.invokeMap(collection, path, [args])</div>

<div data-render-html="/invokeMap"><p>调用 <code>path</code> 的方法处理集合中的每一个元素，返回处理的数组。
如何附加的参数会传入到调用方法中。如果方法名是个函数，集合中的每个元素都会被调用到。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|Function|string)</span> <div data-render-html="/#synthetic"><p>要调用的方法名 或者 这个函数会处理每一个元素 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>The arguments to invoke each method with. </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数组结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >invokeMap</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >7</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token string" >'sort'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [[1, 5, 7], [1, 2, 3]]</span>

_<span class="token punctuation" >.</span><span class="token function" >invokeMap</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >123</span><span class="token punctuation" >,</span> <span class="token number" >456</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> String<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>split<span class="token punctuation" >,</span> <span class="token string" >''</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['1', '2', '3'], ['4', '5', '6']]</span>
</code></pre>
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<div data-render-page="entry"><h2>keyBy <a class="fa-link" href="./keyBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7856" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.keyby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.keyBy(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/keyBy"><p>创建一个对象组成。key 是经 <code>iteratee</code> 处理的结果，value 是产生key的元素。
iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个组成汇总的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'dir'</span><span class="token punctuation" >:</span> <span class="token string" >'left'</span><span class="token punctuation" >,</span> <span class="token string" >'code'</span><span class="token punctuation" >:</span> <span class="token number" >97</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'dir'</span><span class="token punctuation" >:</span> <span class="token string" >'right'</span><span class="token punctuation" >,</span> <span class="token string" >'code'</span><span class="token punctuation" >:</span> <span class="token number" >100</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >keyBy</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> String<span class="token punctuation" >.</span><span class="token function" >fromCharCode</span><span class="token punctuation" >(</span>o<span class="token punctuation" >.</span>code<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }</span>

_<span class="token punctuation" >.</span><span class="token function" >keyBy</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token string" >'dir'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }</span>
</code></pre>
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<div data-render-page="entry"><h2>map <a class="fa-link" href="./map" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7900" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.map" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.map(collection, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/map"><p>创建一个经过 <code>iteratee</code> 处理的集合中每一个元素的结果数组。
iteratee 会传入3个参数：(value, index|key, collection)。
<br>
<br>
有许多 lodash 的方法以 iteratees 的身份守护其工作，例如：
<code>_.every</code>, <code>_.filter</code>, <code>_.map</code>, <code>_.mapValues</code>, <code>_.reject</code>, 以及 <code>_.some</code>
<br>
<br>
被守护的有:<br>
<code>ary</code>, <code>curry</code>, <code>curryRight</code>, <code>drop</code>, <code>dropRight</code>, <code>every</code>, <code>fill</code>,
<code>invert</code>, <code>parseInt</code>, <code>random</code>, <code>range</code>, <code>rangeRight</code>, <code>slice</code>, <code>some</code>,
<code>sortBy</code>, <code>take</code>, <code>takeRight</code>, <code>template</code>, <code>trim</code>, <code>trimEnd</code>, <code>trimStart</code>,
以及 <code>words</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回映射后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> square<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [16, 64]</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >8</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> square<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [16, 64] (无法保证遍历的顺序)</span>

<span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'user'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['barney', 'fred']</span>
</code></pre>
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<div data-render-page="entry"><h2>orderBy <a class="fa-link" href="./orderBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7931" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.orderby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.orderBy(collection, [iteratees&#x3D;[_.identity]], [orders])</div>

<div data-render-html="/orderBy"><p>这个方法类似 <code>_.sortBy</code>，除了它允许指定 iteratees 结果如何排序。
如果没指定 <code>orders</code>，所有值以升序排序。
其他情况，指定 &quot;desc&quot; 降序，指定 &quot;asc&quot; 升序其对应值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratees&#x3D;[_.identity]]</span> <span class="param-type">(Function[]|Object[]|string[])</span> <div data-render-html="/#synthetic"><p>通过 iteratees 决定排序 </p>
</div></li>
<li><span class="param-name">[orders]</span> <span class="param-type">(string[])</span> <div data-render-html="/#synthetic"><p>决定 iteratees 的排序方法 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 排序排序后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >48</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >34</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >42</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 以 `user` 升序排序 再 以 `age` 降序排序。</span>
_<span class="token punctuation" >.</span><span class="token function" >orderBy</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'user'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'asc'</span><span class="token punctuation" >,</span> <span class="token string" >'desc'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]</span>
</code></pre>
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<div data-render-page="entry"><h2>partition <a class="fa-link" href="./partition" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7979" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.partition" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.partition(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/partition"><p>创建一个拆分为两部分的数组。
第一部分是 <code>predicate</code> 检查为真值的，第二部分是 <code>predicate</code> 检查为假值的。
predicate 会传入3个参数：(value, index|key, collection)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回分组元素的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >partition</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: [['fred'], ['barney', 'pebbles']]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >partition</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: [['pebbles'], ['barney', 'fred']]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >partition</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: [['barney', 'pebbles'], ['fred']]</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >partition</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: [['fred'], ['barney', 'pebbles']]</span>
</code></pre>
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<div data-render-page="entry"><h2>reduce <a class="fa-link" href="./reduce" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8018" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.reduce" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.reduce(collection, [iteratee&#x3D;_.identity], [accumulator])</div>

<div data-render-html="/reduce"><p>通过 <code>iteratee</code> 遍历集合中的每个元素。
每次返回的值会作为下一次 <code>iteratee</code> 使用。
如果没有提供 <code>accumulator</code>，则集合中的第一个元素作为 <code>accumulator</code>。
iteratee 会传入4个参数：(accumulator, value, index|key, collection)。
<br>
<br>
有许多 lodash 的方法以 iteratees 的身份守护其工作，例如：
<code>_.reduce</code>, <code>_.reduceRight</code>, 以及 <code>_.transform</code>.
<br>
<br>
被守护的有:<br>
<code>assign</code>, <code>defaults</code>, <code>defaultsDeep</code>, <code>includes</code>, <code>merge</code>, <code>orderBy</code>,
以及 <code>sortBy</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
<li><span class="param-name">[accumulator]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>初始化的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回累加后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >reduce</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>sum<span class="token punctuation" >,</span> n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> sum <span class="token operator" >+</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >reduce</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>result<span class="token punctuation" >,</span> value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token punctuation" >(</span>result<span class="token punctuation" >[</span>value<span class="token punctuation" >]</span> <span class="token operator" >||</span> <span class="token punctuation" >(</span>result<span class="token punctuation" >[</span>value<span class="token punctuation" >]</span> <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >push</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token keyword" >return</span> result<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span><span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '1': ['a', 'c'], '2': ['b'] } (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>reduceRight <a class="fa-link" href="./reduceRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8044" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.reduceright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.reduceRight(collection, [iteratee&#x3D;_.identity], [accumulator])</div>

<div data-render-html="/reduceRight"><p>这个方法类似 <code>_.reduce</code> ，除了它是从右到左遍历的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
<li><span class="param-name">[accumulator]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>初始化的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回累加后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >reduceRight</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>flattened<span class="token punctuation" >,</span> other<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> flattened<span class="token punctuation" >.</span><span class="token function" >concat</span><span class="token punctuation" >(</span>other<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, 5, 2, 3, 0, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>reject <a class="fa-link" href="./reject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8082" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.reject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.reject(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/reject"><p>反向版 <code>_.filter</code>，这个方法返回 <code>predicate</code> 检查为非真值的元素。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回过滤后的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >reject</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> <span class="token operator" >!</span>o<span class="token punctuation" >.</span>active<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >reject</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['barney']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >reject</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['fred']</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >reject</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 结果: ['barney']</span>
</code></pre>
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<div data-render-page="entry"><h2>sample <a class="fa-link" href="./sample" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8103" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sample" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sample(collection)</div>

<div data-render-html="/sample"><p>从集合中随机获得元素</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要取样的集合 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回随机元素</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sample</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>
</code></pre>
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<div data-render-page="entry"><h2>sampleSize <a class="fa-link" href="./sampleSize" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8128" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.samplesize" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sampleSize(collection, [n&#x3D;0])</div>

<div data-render-html="/sampleSize"><p>获得从集合中随机获得 <code>N</code> 个元素
Gets <code>n</code> random elements from <code>collection</code>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要取样的集合 </p>
</div></li>
<li><span class="param-name">[n&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要取得的元素个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回随机元素</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sampleSize</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >sampleSize</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 3, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>shuffle <a class="fa-link" href="./shuffle" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8160" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.shuffle" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.shuffle(collection)</div>

<div data-render-html="/shuffle"><p>创建一个被打乱元素的集合。
使用了 <a href="https://en.wikipedia.org/wiki/Fisher-Yates_shuffle" target="_blank">Fisher-Yates shuffle</a> 版本。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要打乱的集合 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个被打乱元素的新集合</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >shuffle</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, 1, 3, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>size <a class="fa-link" href="./size" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8183" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.size" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.size(collection)</div>

<div data-render-html="/size"><p>返回集合的长度或对象中可枚举属性的个数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>待处理的集合 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回集合的大小</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >size</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >size</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>

_<span class="token punctuation" >.</span><span class="token function" >size</span><span class="token punctuation" >(</span><span class="token string" >'pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 7</span>
</code></pre>
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<div data-render-page="entry"><h2>some <a class="fa-link" href="./some" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8227" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.some" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.some(collection, [predicate&#x3D;_.identity])</div>

<div data-render-html="/some"><p>通过 predicate 检查集合中的元素是否存在任意真值的元素，只要 predicate 返回一次真值，遍历就停止，并返回 true。
predicate 会传入3个参数：(value, index|key, collection)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 true，如果任意元素经 predicate 检查都为真值，否则返回 false。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >some</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token keyword" >null</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token string" >'yes'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> Boolean<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >some</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >some</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >some</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>sortBy <a class="fa-link" href="./sortBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8269" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sortby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sortBy(collection, [iteratees&#x3D;[_.identity]])</div>

<div data-render-html="/sortBy"><p>创建一个元素数组。
以 iteratee 处理的结果升序排序。
这个方法执行稳定排序，也就是说相同元素会保持原始排序。
iteratees 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">collection</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>需要遍历的集合 </p>
</div></li>
<li><span class="param-name">[iteratees&#x3D;[_.identity]]</span> <span class="param-type">(...(Function|Function[]|Object|Object[]|string|string[])</span> <div data-render-html="/#synthetic"><p> 这个函数决定排序 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回排序后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >48</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >42</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >34</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>


_<span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>user<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 排序结果 [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]</span>

_<span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'user'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 排序结果 [['barney', 34], ['barney', 36], ['fred', 42], ['fred', 48]]</span>

_<span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'user'</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> Math<span class="token punctuation" >.</span><span class="token function" >floor</span><span class="token punctuation" >(</span>o<span class="token punctuation" >.</span>age <span class="token operator" >/</span> <span class="token number" >10</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 排序结果 [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]</span>
</code></pre>
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<div data-render-page="entry"><h2>now <a class="fa-link" href="./now" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8299" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.now" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.now()</div>

<div data-render-html="/now"><p>获得 Unix 纪元(1970 1月1日 00:00:00 UTC) 直到现在的毫秒数。</p>
</div>

<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回时间戳</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >defer</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>stamp<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >now</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token operator" >-</span> stamp<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >now</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 记录延迟函数调用的毫秒数</span>
</code></pre>
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<div data-render-page="entry"><h2>after <a class="fa-link" href="./after" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8326" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.after" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.after(n, func)</div>

<div data-render-html="/after"><p>反向版 <code>_.before</code>。
这个方法创建一个新函数，当调用 <code>N</code> 次或者多次之后将触发 <code>func</code> 方法。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">n</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p><code>func</code> 方法应该在调用多少次后才执行 </p>
</div></li>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>指定的触发方法 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回限定的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> saves <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token string" >'profile'</span><span class="token punctuation" >,</span> <span class="token string" >'settings'</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> done <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >after</span><span class="token punctuation" >(</span>saves<span class="token punctuation" >.</span>length<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span><span class="token string" >'done saving!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >forEach</span><span class="token punctuation" >(</span>saves<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>type<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token function" >asyncSave</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'type'</span><span class="token punctuation" >:</span> type<span class="token punctuation" >,</span> <span class="token string" >'complete'</span><span class="token punctuation" >:</span> done <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2次 `asyncSave`之后，输出 'done saving!'。</span>
</code></pre>
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<div data-render-page="entry"><h2>ary <a class="fa-link" href="./ary" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8353" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ary" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.ary(func, [n&#x3D;func.length])</div>

<div data-render-html="/ary"><p>创建一个最多接受 <code>N</code> 个参数，忽略多余参数的方法。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要被限制参数个数的函数 </p>
</div></li>
<li><span class="param-name">[n&#x3D;func.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>限制的参数数量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'6'</span><span class="token punctuation" >,</span> <span class="token string" >'8'</span><span class="token punctuation" >,</span> <span class="token string" >'10'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >ary</span><span class="token punctuation" >(</span>parseInt<span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [6, 8, 10]</span>
</code></pre>
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<div data-render-page="entry"><h2>before <a class="fa-link" href="./before" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8375" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.before" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.before(n, func)</div>

<div data-render-html="/before"><p>创建一个调用 <code>func</code> 的函数。
调用次数不超过 <code>N</code> 次。
之后再调用这个函数，将返回最后一个调用的结果。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">n</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>超过多少次不再调用 <code>func</code> </p>
</div></li>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>指定的触发的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回限定的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token function" >jQuery</span><span class="token punctuation" >(</span>element<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'click'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >before</span><span class="token punctuation" >(</span><span class="token number" >5</span><span class="token punctuation" >,</span> addContactToList<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 最多允许添加4个联系人到列表里</span>
</code></pre>
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<div data-render-page="entry"><h2>bind <a class="fa-link" href="./bind" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8423" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.bind" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.bind(func, thisArg, [partials])</div>

<div data-render-html="/bind"><p>创建一个函数 <code>func</code>，这个函数的 <code>this</code> 会被绑定在 <code>thisArg</code>。
并且任何附加在 <code>_.bind</code> 的参数会被传入到这个绑定函数上。
这个 <code>_.bind.placeholder</code> 的值，默认是以 <code>_</code> 作为附加部分参数的占位符。
<br>
<br>
<strong>注意:</strong> 不同于原生的 Function#bind，这个方法不会设置绑定函数的 length 属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要绑定的函数 </p>
</div></li>
<li><span class="param-name">thisArg</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>这个 <code>this</code> 会被绑定给 <code>func</code>。 </p>
</div></li>
<li><span class="param-name">[partials]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>附加的部分参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的绑定函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> greet <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>greeting<span class="token punctuation" >,</span> punctuation<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> greeting <span class="token operator" >+</span> <span class="token string" >' '</span> <span class="token operator" >+</span> <span class="token keyword" >this</span><span class="token punctuation" >.</span>user <span class="token operator" >+</span> punctuation<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> bound <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >bind</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> object<span class="token punctuation" >,</span> <span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >bound</span><span class="token punctuation" >(</span><span class="token string" >'!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi fred!'</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token keyword" >var</span> bound <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >bind</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> object<span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token string" >'!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >bound</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi fred!'</span>
</code></pre>
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<div data-render-page="entry"><h2>bindKey <a class="fa-link" href="./bindKey" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8475" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.bindkey" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.bindKey(object, key, [partials])</div>

<div data-render-html="/bindKey"><p>创建一个函数。
该方法绑定 <code>object[key]</code> 的方法。
任何附加在 <code>_.bindKey</code> 的参数会预设到该绑定函数上。
<br>
<br>
这个方法与 <code>_.bind</code> 的不同之处在于允许重写绑定函数即使它还不存在。
浏览 <a href="http://peter.michaux.ca/articles/lazy-function-definition-pattern" target="_blank">Peter Michaux&#39;s article</a>
了解更多详情。
<br>
<br>
这个 <code>_.bindKey.placeholder</code> 的值，默认是以 <code>_</code> 作为附加部分参数的占位符。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>需要绑定函数的对象 </p>
</div></li>
<li><span class="param-name">key</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>需要绑定函数对象的键 </p>
</div></li>
<li><span class="param-name">[partials]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>附加的部分参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的绑定函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>
  <span class="token string" >'greet'</span><span class="token punctuation" >:</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>greeting<span class="token punctuation" >,</span> punctuation<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> greeting <span class="token operator" >+</span> <span class="token string" >' '</span> <span class="token operator" >+</span> <span class="token keyword" >this</span><span class="token punctuation" >.</span>user <span class="token operator" >+</span> punctuation<span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> bound <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >bindKey</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'greet'</span><span class="token punctuation" >,</span> <span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >bound</span><span class="token punctuation" >(</span><span class="token string" >'!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi fred!'</span>

object<span class="token punctuation" >.</span>greet <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>greeting<span class="token punctuation" >,</span> punctuation<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> greeting <span class="token operator" >+</span> <span class="token string" >'ya '</span> <span class="token operator" >+</span> <span class="token keyword" >this</span><span class="token punctuation" >.</span>user <span class="token operator" >+</span> punctuation<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token function" >bound</span><span class="token punctuation" >(</span><span class="token string" >'!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hiya fred!'</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token keyword" >var</span> bound <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >bindKey</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'greet'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token string" >'!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >bound</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hiya fred!'</span>
</code></pre>
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<div data-render-page="entry"><h2>curry <a class="fa-link" href="./curry" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8522" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.curry" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.curry(func, [arity&#x3D;func.length])</div>

<div data-render-html="/curry"><p>创建一个函数，该函数接收一个或多个 func 的参数。
当该函数被调用时,如果 func 所需要传递的所有参数都被提供，则直接返回 func 所执行的结果。
否则继续返回该函数并等待接收剩余的参数。
可以使用 func.length 强制需要累积的参数个数。
<br>
<br>
这个 <code>_.curry.placeholder</code> 的值，默认是以 <code>_</code> 作为附加部分参数的占位符。
<br>
<br>
<strong>注意:</strong> 这个方法不会设置 &quot;length&quot; 到 curried 函数上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要 curry 的函数 </p>
</div></li>
<li><span class="param-name">[arity&#x3D;func.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>需要提供给 <code>func</code> 的参数数量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 curry 后的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> abc <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> curried <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >curry</span><span class="token punctuation" >(</span>abc<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span>_<span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>curryRight <a class="fa-link" href="./curryRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8565" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.curryright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.curryRight(func, [arity&#x3D;func.length])</div>

<div data-render-html="/curryRight"><p>这个方法类似 <code>_.curry</code>。
除了它接受参数的方式用 <code>_.partialRight</code> 代替了 <code>_.partial</code>。
<br>
<br>
这个 <code>_.curry.placeholder</code> 的值，默认是以 <code>_</code> 作为附加部分参数的占位符。
<br>
<br>
<strong>注意:</strong> 这个方法不会设置 &quot;length&quot; 到 curried 函数上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要 curry 的函数 </p>
</div></li>
<li><span class="param-name">[arity&#x3D;func.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>需要提供给 <code>func</code> 的参数数量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 curry 后的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> abc <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> curried <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >curryRight</span><span class="token punctuation" >(</span>abc<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token function" >curried</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> _<span class="token punctuation" >)</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>debounce <a class="fa-link" href="./debounce" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8616" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.debounce" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.debounce(func, [wait&#x3D;0], [options])</div>

<div data-render-html="/debounce"><p>创建一个防抖动函数。
该函数会在 <code>wait</code> 毫秒后调用 <code>func</code> 方法。
该函数提供一个 <code>cancel</code> 方法取消延迟的函数调用以及 <code>flush</code> 方法立即调用。
可以提供一个 <code>options</code> 对象决定如何调用 <code>func</code> 方法，
options.leading 与|或 options.trailing 决定延迟前后如何触发。
<code>func</code> 会传入最后一次传入的参数给防抖动函数。
随后调用的防抖动函数返回是最后一次 <code>func</code> 调用的结果。
<br>
<br>
<strong>注意:</strong> 如果 <code>leading</code> 和 <code>trailing</code> 都设定为 true。
则 func 允许 trailing 方式调用的条件为: 在 wait 期间多次调用防抖方法。
<br>
<br>
查看 <a href="http://drupalmotion.com/article/debounce-and-throttle-visual-explanation" target="_blank">David Corbacho&#39;s article</a>
了解 <code>_.debounce</code> 与 <code>_.throttle</code> 的区别。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要防抖动的函数 </p>
</div></li>
<li><span class="param-name">[wait&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>需要延迟的毫秒数 </p>
</div></li>
<li><span class="param-name">[options]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>选项对象 </p>
</div></li>
<li><span class="param-name">[options.leading&#x3D;false]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>指定调用在延迟开始前 </p>
</div></li>
<li><span class="param-name">[options.maxWait]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>设置 <code>func</code> 允许被延迟的最大值 </p>
</div></li>
<li><span class="param-name">[options.trailing&#x3D;true]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>指定调用在延迟结束后 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回具有防抖动功能的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token comment" spellcheck="true">// 避免窗口在变动时出现昂贵的计算开销。</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>window<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'resize'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >debounce</span><span class="token punctuation" >(</span>calculateLayout<span class="token punctuation" >,</span> <span class="token number" >150</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 当点击时 `sendMail` 随后就被调用。</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>element<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'click'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >debounce</span><span class="token punctuation" >(</span>sendMail<span class="token punctuation" >,</span> <span class="token number" >300</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span>
  <span class="token string" >'leading'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span><span class="token punctuation" >,</span>
  <span class="token string" >'trailing'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 确保 `batchLog` 调用1次之后，1秒内会被触发。</span>
<span class="token keyword" >var</span> debounced <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >debounce</span><span class="token punctuation" >(</span>batchLog<span class="token punctuation" >,</span> <span class="token number" >250</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'maxWait'</span><span class="token punctuation" >:</span> <span class="token number" >1000</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> source <span class="token operator" >=</span> <span class="token keyword" >new</span> <span class="token class-name" >EventSource</span><span class="token punctuation" >(</span><span class="token string" >'/stream'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>source<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'message'</span><span class="token punctuation" >,</span> debounced<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 取消一个 trailing 的防抖动调用</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>window<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'popstate'</span><span class="token punctuation" >,</span> debounced<span class="token punctuation" >.</span>cancel<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>defer <a class="fa-link" href="./defer" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8751" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.defer" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.defer(func, [args])</div>

<div data-render-html="/defer"><p>延迟调用 <code>func</code> 直到当前堆栈清理完毕。
任何附加的参数会传入到 <code>func</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要延迟的函数 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>会在调用时传入到 <code>func</code> 的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回计时器 id</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >defer</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>text<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>text<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'deferred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// 一毫秒或更久一些输出 'deferred'。</span>
</code></pre>
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<div data-render-page="entry"><h2>delay <a class="fa-link" href="./delay" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8773" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.delay" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.delay(func, wait, [args])</div>

<div data-render-html="/delay"><p>延迟 <code>wait</code> 毫秒后调用 <code>func</code>。
任何附加的参数会传入到 <code>func</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要延迟的函数 </p>
</div></li>
<li><span class="param-name">wait</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要延迟的毫秒数 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>会在调用时传入到 <code>func</code> 的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回计时器 id</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >delay</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>text<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>text<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token number" >1000</span><span class="token punctuation" >,</span> <span class="token string" >'later'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 一秒后输出 'later'。</span>
</code></pre>
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<div data-render-page="entry"><h2>flip <a class="fa-link" href="./flip" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8794" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flip" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flip(func)</div>

<div data-render-html="/flip"><p>创建一个翻转接收参数的 <code>func</code> 函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要翻转参数的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> flipped <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >flip</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> _<span class="token punctuation" >.</span><span class="token function" >toArray</span><span class="token punctuation" >(</span>arguments<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >flipped</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'d'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['d', 'c', 'b', 'a']</span>
</code></pre>
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<div data-render-page="entry"><h2>memoize <a class="fa-link" href="./memoize" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8839" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.memoize" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.memoize(func, [resolver])</div>

<div data-render-html="/memoize"><p>创建一个会缓存 <code>func</code> 结果的函数。
如果提供了 <code>resolver</code>，就用 <code>resolver</code> 的返回值作为 key 缓存函数的结果。
默认情况下用第一个参数作为缓存的 key。
<code>func</code> 在调用时 this 会绑定在缓存函数上。
<br>
<br>
<strong>注意:</strong>
缓存会暴露在缓存函数的 <code>cache</code> 上。
它是可以定制的，只要替换了 _.memoize.Cache 构造函数，或实现了 <a href="http://ecma-international.org/ecma-262/6.0/#sec-properties-of-the-map-prototype-object" target="_blank"><code>Map</code></a> 的
<code>delete</code>， <code>get</code>， <code>has</code>， 以及 <code>set</code>方法。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要缓存化的函数 </p>
</div></li>
<li><span class="param-name">[resolver]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数的返回值作为缓存的 key </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回缓存化后的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token string" >'d'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> values <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >memoize</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>values<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >values</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

<span class="token function" >values</span><span class="token punctuation" >(</span>other<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 4]</span>

object<span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token function" >values</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

<span class="token comment" spellcheck="true">// 修改结果缓存</span>
values<span class="token punctuation" >.</span>cache<span class="token punctuation" >.</span><span class="token keyword" >set</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >values</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b']</span>

<span class="token comment" spellcheck="true">// 替换 `_.memoize.Cache`</span>
_<span class="token punctuation" >.</span>memoize<span class="token punctuation" >.</span>Cache <span class="token operator" >=</span> WeakMap<span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>negate <a class="fa-link" href="./negate" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8877" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.negate" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.negate(predicate)</div>

<div data-render-html="/negate"><p>创建一个对 <code>func</code> 结果 取反的函数。
用 predicate 对 <code>func</code> 检查的时候，<code>this</code> 绑定到创建的函数，并传入对应参数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">predicate</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要对结果取反的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回一个新函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >isEven</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >%</span> <span class="token number" >2</span> <span class="token operator" >==</span> <span class="token number" >0</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

_<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >negate</span><span class="token punctuation" >(</span>isEven<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 3, 5]</span>
</code></pre>
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<div data-render-page="entry"><h2>once <a class="fa-link" href="./once" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8903" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.once" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.once(func)</div>

<div data-render-html="/once"><p>创建一个只能调用一次的函数。
重复调用返回第一次调用的结果。
<code>func</code> 调用时，this 绑定到创建的函数，并传入对应参数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>指定的触发的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回受限的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> initialize <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >once</span><span class="token punctuation" >(</span>createApplication<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >initialize</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >initialize</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// `initialize` 只能调用 `createApplication` 一次。</span>
</code></pre>
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<div data-render-page="entry"><h2>overArgs <a class="fa-link" href="./overArgs" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8936" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.overargs" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.overArgs(func, [transforms])</div>

<div data-render-html="/overArgs"><p>创建一个函数，调用时<code>func</code> 参数会先一对一的改变。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要包裹的函数 </p>
</div></li>
<li><span class="param-name">[transforms]</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>这个函数会改变传参，单独指定或者指定在数组中 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >doubled</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >overArgs</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>x<span class="token punctuation" >,</span> y<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>x<span class="token punctuation" >,</span> y<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> square<span class="token punctuation" >,</span> doubled<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token number" >9</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [81, 6]</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [100, 10]</span>
</code></pre>
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<div data-render-page="entry"><h2>partial <a class="fa-link" href="./partial" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8980" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.partial" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.partial(func, [partials])</div>

<div data-render-html="/partial"><p>创建一个函数。
该函数调用 func，并传入预设的参数。
这个方法类似 <code>_.bind</code>，除了它不会绑定 <code>this</code>。
这个 <code>_.partial.placeholder</code> 的值，默认是以 <code>_</code> 作为附加部分参数的占位符。
<br>
<br>
<strong>注意:</strong> 这个方法不会设置 &quot;length&quot; 到函数上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要预设的函数 </p>
</div></li>
<li><span class="param-name">[partials]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>预设的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回预设参数的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> greet <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>greeting<span class="token punctuation" >,</span> name<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> greeting <span class="token operator" >+</span> <span class="token string" >' '</span> <span class="token operator" >+</span> name<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> sayHelloTo <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partial</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> <span class="token string" >'hello'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >sayHelloTo</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello fred'</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token keyword" >var</span> greetFred <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partial</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >greetFred</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi fred'</span>
</code></pre>
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<div data-render-page="entry"><h2>partialRight <a class="fa-link" href="./partialRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9012" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.partialright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.partialRight(func, [partials])</div>

<div data-render-html="/partialRight"><p>这个函数类似 <code>_.partial</code>，除了它是从右到左预设参数的。
这个 <em>.partialRight.placeholder 的值，默认是以 </em> 作为附加部分参数的占位符。
<br>
<br>
<strong>注意:</strong> 这个方法不会设置 &quot;length&quot; 到函数上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>需要预设的函数 </p>
</div></li>
<li><span class="param-name">[partials]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>预设的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回预设参数的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> greet <span class="token operator" >=</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>greeting<span class="token punctuation" >,</span> name<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> greeting <span class="token operator" >+</span> <span class="token string" >' '</span> <span class="token operator" >+</span> name<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> greetFred <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partialRight</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> <span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >greetFred</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi fred'</span>

<span class="token comment" spellcheck="true">// 使用了占位符</span>
<span class="token keyword" >var</span> sayHelloTo <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partialRight</span><span class="token punctuation" >(</span>greet<span class="token punctuation" >,</span> <span class="token string" >'hello'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >sayHelloTo</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello fred'</span>
</code></pre>
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<div data-render-page="entry"><h2>rearg <a class="fa-link" href="./rearg" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9037" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.rearg" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.rearg(func, indexes)</div>

<div data-render-html="/rearg"><p>创建一个调用 <code>func</code> 的函数。
所传递的参数根据 indexes 调整到对应位置。
第一个 index 对应到第一个传参，第二个 index 对应到第二个传参，以此类推。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>待调用的函数 </p>
</div></li>
<li><span class="param-name">indexes</span> <span class="param-type">(...(number|number[])</span> <div data-render-html="/#synthetic"><p>重新排列参数的位置，单独指定或者指定在数组中 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> rearged <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >rearg</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>a<span class="token punctuation" >,</span> b<span class="token punctuation" >,</span> c<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >rearged</span><span class="token punctuation" >(</span><span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c']</span>
</code></pre>
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<div data-render-page="entry"><h2>rest <a class="fa-link" href="./rest" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9063" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.rest" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.rest(func, [start&#x3D;func.length-1])</div>

<div data-render-html="/rest"><p>创建一个调用 <code>func</code> 的函数。
<code>this</code> 绑定到这个函数 并且 从 <code>start</code> 之后的参数都作为数组传入。
<br>
<br>
<strong>注意:</strong> 这个方法基于<a href="https://mdn.io/rest_parameters" target="_blank">rest parameter</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要应用的函数 </p>
</div></li>
<li><span class="param-name">[start&#x3D;func.length-1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>从第几个参数开始应用 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> say <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >rest</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>what<span class="token punctuation" >,</span> names<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> what <span class="token operator" >+</span> <span class="token string" >' '</span> <span class="token operator" >+</span> _<span class="token punctuation" >.</span><span class="token function" >initial</span><span class="token punctuation" >(</span>names<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >join</span><span class="token punctuation" >(</span><span class="token string" >', '</span><span class="token punctuation" >)</span> <span class="token operator" >+</span>
    <span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >size</span><span class="token punctuation" >(</span>names<span class="token punctuation" >)</span> <span class="token operator" >></span> <span class="token number" >1</span> <span class="token operator" >?</span> <span class="token string" >', &amp; '</span> <span class="token punctuation" >:</span> <span class="token string" >''</span><span class="token punctuation" >)</span> <span class="token operator" >+</span> _<span class="token punctuation" >.</span><span class="token function" >last</span><span class="token punctuation" >(</span>names<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >say</span><span class="token punctuation" >(</span><span class="token string" >'hello'</span><span class="token punctuation" >,</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello fred, barney, &amp; pebbles'</span>
</code></pre>
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<div data-render-page="entry"><h2>spread <a class="fa-link" href="./spread" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9125" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.spread" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.spread(func)</div>

<div data-render-html="/spread"><p>创建一个调用 <code>func</code> 的函数。 <code>this</code> 绑定到这个函数上。
把参数作为数组传入，类似于 <a href="https://es5.github.io/#x15.3.4.3" target="_blank"><code>Function#apply</code></a>
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/spread_operator" target="_blank">spread operator</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要应用的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> say <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >spread</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>who<span class="token punctuation" >,</span> what<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> who <span class="token operator" >+</span> <span class="token string" >' says '</span> <span class="token operator" >+</span> what<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >say</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'hello'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred says hello'</span>

<span class="token keyword" >var</span> numbers <span class="token operator" >=</span> Promise<span class="token punctuation" >.</span><span class="token function" >all</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span>
  Promise<span class="token punctuation" >.</span><span class="token function" >resolve</span><span class="token punctuation" >(</span><span class="token number" >40</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span>
  Promise<span class="token punctuation" >.</span><span class="token function" >resolve</span><span class="token punctuation" >(</span><span class="token number" >36</span><span class="token punctuation" >)</span>
<span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

numbers<span class="token punctuation" >.</span><span class="token function" >then</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >spread</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>x<span class="token punctuation" >,</span> y<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> x <span class="token operator" >+</span> y<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 返回 76</span>
</code></pre>
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<div data-render-page="entry"><h2>throttle <a class="fa-link" href="./throttle" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9172" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.throttle" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.throttle(func, [wait&#x3D;0], [options])</div>

<div data-render-html="/throttle"><p>创建一个节流函数，在 <code>wait</code> 秒内最多执行 <code>func</code> 一次的函数。
该函数提供一个 cancel 方法取消延迟的函数调用以及 flush 方法立即调用。
可以提供一个 options 对象决定如何调用 func 方法， options.leading 与|或 options.trailing 决定 <code>wait</code> 前后如何触发。 func 会传入最后一次传入的参数给这个函数。 随后调用的函数返回是最后一次 func 调用的结果。
<br>
<br>
<strong>注意:</strong> 如果 leading 和 trailing 都设定为 true。 则 func 允许 trailing 方式调用的条件为: 在 wait 期间多次调用。
<br>
<br>
查看 <a href="http://drupalmotion.com/article/debounce-and-throttle-visual-explanation" target="_blank">David Corbacho&#39;s article</a>
了解 <code>_.throttle</code> 与 <code>_.debounce</code> 的区别</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要节流的函数 </p>
</div></li>
<li><span class="param-name">[wait&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>需要节流的毫秒 </p>
</div></li>
<li><span class="param-name">[options]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>选项对象 </p>
</div></li>
<li><span class="param-name">[options.leading&#x3D;true]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>指定调用在节流开始前 </p>
</div></li>
<li><span class="param-name">[options.trailing&#x3D;true]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>指定调用在节流结束后 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回节流的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token comment" spellcheck="true">// 避免在滚动时过分的更新定位</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>window<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'scroll'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >throttle</span><span class="token punctuation" >(</span>updatePosition<span class="token punctuation" >,</span> <span class="token number" >100</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 点击后就调用 `renewToken`，但5分钟内超过1次。</span>
<span class="token keyword" >var</span> throttled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >throttle</span><span class="token punctuation" >(</span>renewToken<span class="token punctuation" >,</span> <span class="token number" >300000</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'trailing'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>element<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'click'</span><span class="token punctuation" >,</span> throttled<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 取消一个 trailing 的节流调用</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>window<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'popstate'</span><span class="token punctuation" >,</span> throttled<span class="token punctuation" >.</span>cancel<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>unary <a class="fa-link" href="./unary" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9199" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unary" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unary(func)</div>

<div data-render-html="/unary"><p>创建一个最多接受一个参数的函数，忽略多余的参数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要处理的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'6'</span><span class="token punctuation" >,</span> <span class="token string" >'8'</span><span class="token punctuation" >,</span> <span class="token string" >'10'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >unary</span><span class="token punctuation" >(</span>parseInt<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [6, 8, 10]</span>
</code></pre>
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<div data-render-page="entry"><h2>wrap <a class="fa-link" href="./wrap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9223" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.wrap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.wrap(value, wrapper)</div>

<div data-render-html="/wrap"><p>创建一个函数。提供的 <code>value</code> 包装在 wrapper 函数的第一个参数里。
任何附加的参数都提供给 wrapper 函数。
被调用时 <code>this</code> 绑定在创建的函数上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要包装的值 </p>
</div></li>
<li><span class="param-name">wrapper</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>包装函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> p <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >wrap</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>escape<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>func<span class="token punctuation" >,</span> text<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token string" >'&lt;p>'</span> <span class="token operator" >+</span> <span class="token function" >func</span><span class="token punctuation" >(</span>text<span class="token punctuation" >)</span> <span class="token operator" >+</span> <span class="token string" >'&lt;/p>'</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >p</span><span class="token punctuation" >(</span><span class="token string" >'fred, barney, &amp; pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '&lt;p>fred, barney, &amp;amp; pebbles&lt;/p>'</span>
</code></pre>
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<div data-render-page="entry"><h2>castArray <a class="fa-link" href="./castArray" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9262" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.castarray" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.castArray(value)</div>

<div data-render-html="/castArray"><p>如果 <code>value</code> 不是数组, 那么强制转为数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要处理的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1]</span>

_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'a': 1 }]</span>

_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['abc']</span>

_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [null]</span>

_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span>undefined<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [undefined]</span>

_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>

<span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >castArray</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span> <span class="token operator" >===</span> array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>clone <a class="fa-link" href="./clone" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9294" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.clone" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.clone(value)</div>

<div data-render-html="/clone"><p>创建一个 <code>value</code> 的浅拷贝。
<br>
<br>
<strong>注意:</strong> 这个方法参考自
<a href="https://mdn.io/Structured_clone_algorithm" target="_blank">structured clone algorithm</a>
以及支持 arrays、array buffers、 booleans、 date objects、maps、
numbers， <code>Object</code> objects, regexes, sets, strings, symbols, 以及 typed
arrays。
参数对象的可枚举属性会拷贝为普通对象。
一些不可拷贝的对象，例如error objects、functions, DOM nodes, 以及 WeakMaps 会返回空对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要拷贝的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回拷贝后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> shallow <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >clone</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>shallow<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span> <span class="token operator" >===</span> objects<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>cloneDeep <a class="fa-link" href="./cloneDeep" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9346" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.clonedeep" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.cloneDeep(value)</div>

<div data-render-html="/cloneDeep"><p>这个方法类似 <code>_.clone</code>，除了它会递归拷贝 <code>value</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要深拷贝的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回拷贝后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> deep <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >cloneDeep</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>deep<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span> <span class="token operator" >===</span> objects<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>cloneDeepWith <a class="fa-link" href="./cloneDeepWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9376" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.clonedeepwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.cloneDeepWith(value, [customizer])</div>

<div data-render-html="/cloneDeepWith"><p>这个方法类似 <code>_.cloneWith</code>，除了它会递归拷贝 <code>value</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要深拷贝的值 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数定制返回的拷贝值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回拷贝后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >if</span> <span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >isElement</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> value<span class="token punctuation" >.</span><span class="token function" >cloneNode</span><span class="token punctuation" >(</span><span class="token keyword" >true</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> el <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >cloneDeep</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el <span class="token operator" >===</span> document<span class="token punctuation" >.</span>body<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el<span class="token punctuation" >.</span>nodeName<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => BODY</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el<span class="token punctuation" >.</span>childNodes<span class="token punctuation" >.</span>length<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 20</span>
</code></pre>
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<div data-render-page="entry"><h2>cloneWith <a class="fa-link" href="./cloneWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9326" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.clonewith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.cloneWith(value, [customizer])</div>

<div data-render-html="/cloneWith"><p>这个方法类似 <code>_.clone</code>，除了它接受一个 <code>customizer</code> 定制返回的拷贝值。
如果 <code>customizer</code> 返回 <code>undefined</code> 将会拷贝处理方法代替。
<code>customizer</code> 会传入5个参数：(value [, index|key, object, stack])</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要拷贝的值 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数定制返回的拷贝值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回拷贝后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >if</span> <span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >isElement</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> value<span class="token punctuation" >.</span><span class="token function" >cloneNode</span><span class="token punctuation" >(</span><span class="token keyword" >false</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> el <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >cloneWith</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el <span class="token operator" >===</span> document<span class="token punctuation" >.</span>body<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el<span class="token punctuation" >.</span>nodeName<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'BODY'</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>el<span class="token punctuation" >.</span>childNodes<span class="token punctuation" >.</span>length<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>
</code></pre>
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<div data-render-page="entry"><h2>eq <a class="fa-link" href="./eq" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9409" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.eq" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.eq(value, other)</div>

<div data-render-html="/eq"><p>执行 <a href="http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero" target="_blank"><code>SameValueZero</code></a> 比较两者的值确定它们是否相等。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 相等返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >eq</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >eq</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> other<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >eq</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >eq</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token function" >Object</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >eq</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >,</span> <span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>gt <a class="fa-link" href="./gt" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9433" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.gt" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.gt(value, other)</div>

<div data-render-html="/gt"><p>检查 <code>value</code> 是否大于 <code>other</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果 <code>value</code> 大于 <code>other</code>，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >gt</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >gt</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >gt</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>gte <a class="fa-link" href="./gte" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9457" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.gte" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.gte(value, other)</div>

<div data-render-html="/gte"><p>检查 <code>value</code> 是否大于等于 <code>other</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果 <code>value</code> 大于等于 <code>other</code>，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >gte</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >gte</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >gte</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isArguments <a class="fa-link" href="./isArguments" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9477" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isarguments" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isArguments(value)</div>

<div data-render-html="/isArguments"><p>检查 <code>value</code> 是否是 类 <code>arguments</code> 对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isArguments</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> arguments<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArguments</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isArray <a class="fa-link" href="./isArray" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9506" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isarray" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isArray(value)</div>

<div data-render-html="/isArray"><p>检查 <code>value</code> 是否是 <code>Array</code> 类对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >.</span>children<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>noop<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isArrayBuffer <a class="fa-link" href="./isArrayBuffer" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9524" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isarraybuffer" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isArrayBuffer(value)</div>

<div data-render-html="/isArrayBuffer"><p>检查 <code>value</code> 是否是 <code>ArrayBuffer</code> 对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 <code>ArrayBuffer</code>，返回 <code>true</code>，否则返回 <code>false</code>.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isArrayBuffer</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >ArrayBuffer</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayBuffer</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Array</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isArrayLike <a class="fa-link" href="./isArrayLike" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9551" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isarraylike" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isArrayLike(value)</div>

<div data-render-html="/isArrayLike"><p>检查 <code>value</code> 是否是类数组。
如果是类数组的话，应该不是一个函数，而且 <code>value.length</code> 是个整数，大于等于 0，小于或等于 <code>Number.MAX_SAFE_INTEGER</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是类数组，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isArrayLike</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLike</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >.</span>children<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLike</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLike</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>noop<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isArrayLikeObject <a class="fa-link" href="./isArrayLikeObject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9577" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isarraylikeobject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isArrayLikeObject(value)</div>

<div data-render-html="/isArrayLikeObject"><p>这个方法类似 <code>_.isArrayLike</code>，除了它还检查值是否是个对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是类数组对象，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isArrayLikeObject</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLikeObject</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >.</span>children<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLikeObject</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isArrayLikeObject</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>noop<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isBoolean <a class="fa-link" href="./isBoolean" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9597" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isboolean" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isBoolean(value)</div>

<div data-render-html="/isBoolean"><p>检查 <code>value</code> 是否是原始 boolean 类型或者对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isBoolean</span><span class="token punctuation" >(</span><span class="token keyword" >false</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isBoolean</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isBuffer <a class="fa-link" href="./isBuffer" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9618" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isbuffer" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isBuffer(value)</div>

<div data-render-html="/isBuffer"><p>检查 <code>value</code> 是否是个 <code>buffer</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isBuffer</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Buffer</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isBuffer</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Uint8Array</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isDate <a class="fa-link" href="./isDate" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9638" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isdate" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isDate(value)</div>

<div data-render-html="/isDate"><p>检查 <code>value</code> 是否是 <code>Date</code> 类型</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isDate</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Date</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isDate</span><span class="token punctuation" >(</span><span class="token string" >'Mon April 23 2012'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isElement <a class="fa-link" href="./isElement" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9658" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.iselement" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isElement(value)</div>

<div data-render-html="/isElement"><p>检查 <code>value</code> 是否是可能是 DOM 元素</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 DOM 元素返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isElement</span><span class="token punctuation" >(</span>document<span class="token punctuation" >.</span>body<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isElement</span><span class="token punctuation" >(</span><span class="token string" >'&lt;body>'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isEmpty <a class="fa-link" href="./isEmpty" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9688" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isempty" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isEmpty(value)</div>

<div data-render-html="/isEmpty"><p>检查 <code>value</code> 是否为空。
判断的依据是除非是有枚举属性的对象，length 大于 <code>0</code> 的 <code>arguments</code> object, array, string 或类jquery选择器。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(Array|Object|string)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果为空返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isEmpty</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isEmpty</span><span class="token punctuation" >(</span><span class="token keyword" >true</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isEmpty</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isEmpty</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isEmpty</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isEqual <a class="fa-link" href="./isEqual" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9726" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isequal" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isEqual(value, other)</div>

<div data-render-html="/isEqual"><p>执行深比较来决定两者的值是否相等。
<br>
<br>
<strong>注意:</strong> 这个方法支持比较 arrays, array buffers, booleans,
date objects, error objects, maps, numbers, <code>Object</code> objects, regexes,
sets, strings, symbols, 以及 typed arrays. <code>Object</code> 对象值比较自身的属性，不包括继承的和可枚举的属性。
不支持函数和DOM节点。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果相等返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isEqual</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> other<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

object <span class="token operator" >===</span> other<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isEqualWith <a class="fa-link" href="./isEqualWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9760" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isequalwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isEqualWith(value, other, [customizer])</div>

<div data-render-html="/isEqualWith"><p>这个方法类似 <code>_.isEqual</code>。
除了它接受一个 customizer 定制比较值。 如果 customizer 返回 undefined 将会比较处理方法代替。
<code>customizer</code> 会传入7个参数：(objValue, othValue [, index|key, object, other, stack])</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数定制比较值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果相等返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >isGreeting</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token regex" >/^h(?:i|ello)$/</span><span class="token punctuation" >.</span><span class="token function" >test</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >,</span> othValue<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >if</span> <span class="token punctuation" >(</span><span class="token function" >isGreeting</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >)</span> <span class="token operator" >&amp;&amp;</span> <span class="token function" >isGreeting</span><span class="token punctuation" >(</span>othValue<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> <span class="token keyword" >true</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token string" >'hello'</span><span class="token punctuation" >,</span> <span class="token string" >'goodbye'</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token string" >'hi'</span><span class="token punctuation" >,</span> <span class="token string" >'goodbye'</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isEqualWith</span><span class="token punctuation" >(</span>array<span class="token punctuation" >,</span> other<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>isError <a class="fa-link" href="./isError" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9783" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.iserror" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isError(value)</div>

<div data-render-html="/isError"><p>检查 <code>value</code> 是否是 <code>Error</code>, <code>EvalError</code>, <code>RangeError</code>, <code>ReferenceError</code>,
<code>SyntaxError</code>, <code>TypeError</code>, 或 <code>URIError</code> object.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 error object 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isError</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Error</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isError</span><span class="token punctuation" >(</span>Error<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isFinite <a class="fa-link" href="./isFinite" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9815" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isfinite" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isFinite(value)</div>

<div data-render-html="/isFinite"><p>检查 <code>value</code> 是否是原始 finite number。
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/Number/isFinite" target="_blank"><code>Number.isFinite</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 finite number 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isFinite</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isFinite</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MAX_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isFinite</span><span class="token punctuation" >(</span><span class="token number" >3.14</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isFinite</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isFunction <a class="fa-link" href="./isFunction" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9835" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isfunction" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isFunction(value)</div>

<div data-render-html="/isFunction"><p>检查 <code>value</code> 是否是 <code>Function</code> 对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span>_<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span><span class="token regex" >/abc/</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isInteger <a class="fa-link" href="./isInteger" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9867" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isinteger" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isInteger(value)</div>

<div data-render-html="/isInteger"><p>检查 <code>value</code> 是否是整数。
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/Number/isInteger" target="_blank"><code>Number.isInteger</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是整数返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isInteger</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isInteger</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isInteger</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isInteger</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isLength <a class="fa-link" href="./isLength" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9895" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.islength" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isLength(value)</div>

<div data-render-html="/isLength"><p>检查 <code>value</code> 是否是有效长度
<br>
<br>
<strong>注意:</strong> 这个方法参考自 <a href="http://ecma-international.org/ecma-262/6.0/#sec-tolength" target="_blank"><code>ToLength</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是有效长度返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isLength</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isLength</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isLength</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isLength</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isMap <a class="fa-link" href="./isMap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9970" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ismap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isMap(value)</div>

<div data-render-html="/isMap"><p>检查 <code>value</code> 是否是个 <code>Map</code> 对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 <code>Map</code> 对象返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isMap</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Map</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isMap</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >WeakMap</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isMatch <a class="fa-link" href="./isMatch" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9995" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ismatch" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isMatch(object, source)</div>

<div data-render-html="/isMatch"><p>执行一个深比较来确定<code>object</code> 是否包含有 <code>source</code> 的属性值。
<br>
<br>
<strong>注意:</strong> 这个方法支持比较相同的值和 <code>_.isEqual</code> 一样</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
<li><span class="param-name">source</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>匹配包含在 object 的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果匹配返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isMatch</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isMatch</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isMatchWith <a class="fa-link" href="./isMatchWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10029" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ismatchwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isMatchWith(object, source, [customizer])</div>

<div data-render-html="/isMatchWith"><p>这个方法类似 <code>_.isMatch</code>。
除了它接受一个 customizer 定制比较的值。
如果 customizer 返回 undefined 将会比较处理方法代替。 customizer 会传入5个参数：(objValue, srcValue, index|key, object, source)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
<li><span class="param-name">source</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>匹配包含在 object 的对象 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数定制比较值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果匹配返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >isGreeting</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token regex" >/^h(?:i|ello)$/</span><span class="token punctuation" >.</span><span class="token function" >test</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >,</span> srcValue<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >if</span> <span class="token punctuation" >(</span><span class="token function" >isGreeting</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >)</span> <span class="token operator" >&amp;&amp;</span> <span class="token function" >isGreeting</span><span class="token punctuation" >(</span>srcValue<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> <span class="token keyword" >true</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'greeting'</span><span class="token punctuation" >:</span> <span class="token string" >'hello'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> source <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'greeting'</span><span class="token punctuation" >:</span> <span class="token string" >'hi'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isMatchWith</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> source<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>isNaN <a class="fa-link" href="./isNaN" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10059" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isnan" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isNaN(value)</div>

<div data-render-html="/isNaN"><p>检查 <code>value</code> 是否是 <code>NaN</code>.
<br>
<br>
<strong>注意:</strong> 这个方法不同于 <a href="https://es5.github.io/#x15.1.2.4" target="_blank"><code>isNaN</code></a>
对 undefind 和 其他非数值返回 true.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果符合 <code>NaN</code> 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isNaN</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNaN</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Number</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token function" >isNaN</span><span class="token punctuation" >(</span>undefined<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNaN</span><span class="token punctuation" >(</span>undefined<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isNative <a class="fa-link" href="./isNative" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10081" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isnative" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isNative(value)</div>

<div data-render-html="/isNative"><p>检查 <code>value</code> 是否是原生函数</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是原生函数返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isNative</span><span class="token punctuation" >(</span>Array<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>push<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNative</span><span class="token punctuation" >(</span>_<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isNil <a class="fa-link" href="./isNil" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10131" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isnil" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isNil(value)</div>

<div data-render-html="/isNil"><p>检查 <code>value</code> 是否是 <code>null</code> 或者 <code>undefined</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 <code>null</code> 或者 <code>undefined</code> 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isNil</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNil</span><span class="token punctuation" >(</span><span class="token keyword" >void</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNil</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isNull <a class="fa-link" href="./isNull" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10108" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isnull" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isNull(value)</div>

<div data-render-html="/isNull"><p>检查 <code>value</code> 是否是 <code>null</code>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是 <code>null</code> 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isNull</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNull</span><span class="token punctuation" >(</span><span class="token keyword" >void</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isNumber <a class="fa-link" href="./isNumber" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10159" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isnumber" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isNumber(value)</div>

<div data-render-html="/isNumber"><p>检查 <code>value</code> 是否是原始数值型 或者 对象。
<br>
<br>
<strong>注意:</strong> 要排除 <code>Infinity</code>, <code>-Infinity</code>, 以及 <code>NaN</code> 数值类型，用 <code>_.isFinite</code> 方法</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isNumber</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNumber</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNumber</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isNumber</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isObject <a class="fa-link" href="./isObject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9922" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isobject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isObject(value)</div>

<div data-render-html="/isObject"><p>检查 <code>value</code> 是否是 <code>Object</code> 的 <a href="https://es5.github.io/#x8" target="_blank">language type</a>。
(例如： arrays, functions, objects, regexes, <code>new Number(0)</code>, 以及 <code>new String(&#39;&#39;)</code>)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是对象返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isObject</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span><span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isObject</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isObject</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>noop<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isObject</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isObjectLike <a class="fa-link" href="./isObjectLike" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L9950" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isobjectlike" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isObjectLike(value)</div>

<div data-render-html="/isObjectLike"><p>检查 <code>value</code> 是否是 类对象。
类对象应该不是 <code>null</code> 以及 <code>typeof</code> 的结果是 &quot;object&quot;。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是类对象返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isObjectLike</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span><span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isObjectLike</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isObjectLike</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>noop<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isObjectLike</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isPlainObject <a class="fa-link" href="./isPlainObject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10191" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isplainobject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isPlainObject(value)</div>

<div data-render-html="/isPlainObject"><p>检查 <code>value</code> 是否是普通对象。
也就是说该对象由 <code>Object</code> 构造函数创建或者 <code>[[Prototype]]</code> 为空。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是普通对象返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

_<span class="token punctuation" >.</span><span class="token function" >isPlainObject</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isPlainObject</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isPlainObject</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'x'</span><span class="token punctuation" >:</span> <span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token string" >'y'</span><span class="token punctuation" >:</span> <span class="token number" >0</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isPlainObject</span><span class="token punctuation" >(</span>Object<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>isRegExp <a class="fa-link" href="./isRegExp" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10220" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isregexp" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isRegExp(value)</div>

<div data-render-html="/isRegExp"><p>检查 <code>value</code> 是否是 <code>RegExp</code> 对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isRegExp</span><span class="token punctuation" >(</span><span class="token regex" >/abc/</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isRegExp</span><span class="token punctuation" >(</span><span class="token string" >'/abc/'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isSafeInteger <a class="fa-link" href="./isSafeInteger" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10249" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.issafeinteger" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isSafeInteger(value)</div>

<div data-render-html="/isSafeInteger"><p>检查 <code>value</code> 是否是安全整数。
这个整数应该是符合 IEEE-754 标准的非双精度浮点数。
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/Number/isSafeInteger" target="_blank"><code>Number.isSafeInteger</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是安全整数返回<code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isSafeInteger</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isSafeInteger</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isSafeInteger</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isSafeInteger</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isSet <a class="fa-link" href="./isSet" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10269" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isset" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isSet(value)</div>

<div data-render-html="/isSet"><p>检查 <code>value</code> 是否是 <code>Set</code> 对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isSet</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Set</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isSet</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >WeakSet</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isString <a class="fa-link" href="./isString" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10289" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isstring" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isString(value)</div>

<div data-render-html="/isString"><p>检查 <code>value</code> 是否是原始字符串或者对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isString</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isString</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isSymbol <a class="fa-link" href="./isSymbol" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10310" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.issymbol" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isSymbol(value)</div>

<div data-render-html="/isSymbol"><p>检查 <code>value</code> 是否是原始 <code>Symbol</code> 或者对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isSymbol</span><span class="token punctuation" >(</span>Symbol<span class="token punctuation" >.</span>iterator<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isSymbol</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isTypedArray <a class="fa-link" href="./isTypedArray" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10331" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.istypedarray" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isTypedArray(value)</div>

<div data-render-html="/isTypedArray"><p>检查 <code>value</code> 是否是TypedArray。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isTypedArray</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Uint8Array</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isTypedArray</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isUndefined <a class="fa-link" href="./isUndefined" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10351" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isundefined" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isUndefined(value)</div>

<div data-render-html="/isUndefined"><p>检查 <code>value</code> 是否是 <code>undefined</code>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isUndefined</span><span class="token punctuation" >(</span><span class="token keyword" >void</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isUndefined</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isWeakMap <a class="fa-link" href="./isWeakMap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10371" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isweakmap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isWeakMap(value)</div>

<div data-render-html="/isWeakMap"><p>检查 <code>value</code> 是否是 <code>WeakMap</code> 对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isWeakMap</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >WeakMap</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isWeakMap</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Map</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>isWeakSet <a class="fa-link" href="./isWeakSet" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10391" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.isweakset" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.isWeakSet(value)</div>

<div data-render-html="/isWeakSet"><p>检查 <code>value</code> 是否是 <code>WeakSet</code> 对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是正确的类型，返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >isWeakSet</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >WeakSet</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >isWeakSet</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Set</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>lt <a class="fa-link" href="./lt" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10415" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.lt" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.lt(value, other)</div>

<div data-render-html="/lt"><p>检查 <code>value</code> 是否是 小于 <code>other</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果 <code>value</code> 小于 <code>other</code> 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >lt</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >lt</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >lt</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>lte <a class="fa-link" href="./lte" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10439" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.lte" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.lte(value, other)</div>

<div data-render-html="/lte"><p>检查 <code>value</code> 是否是 小于等于 <code>other</code>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要比较的值 </p>
</div></li>
<li><span class="param-name">other</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>其他要比较的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果 <code>value</code> 小于等于 <code>other</code> 返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >lte</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >lte</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >lte</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>toArray <a class="fa-link" href="./toArray" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10465" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.toarray" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toArray(value)</div>

<div data-render-html="/toArray"><p>转换 <code>value</code> 为数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 然后转换后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toArray</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

_<span class="token punctuation" >.</span><span class="token function" >toArray</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c']</span>

_<span class="token punctuation" >.</span><span class="token function" >toArray</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>

_<span class="token punctuation" >.</span><span class="token function" >toArray</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>toInteger <a class="fa-link" href="./toInteger" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10505" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tointeger" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toInteger(value)</div>

<div data-render-html="/toInteger"><p>转换 <code>value</code> 为整数
<br>
<br>
<strong>注意:</strong> 这个函数参考 <a href="http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger" target="_blank"><code>ToInteger</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的整数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toInteger</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >toInteger</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

_<span class="token punctuation" >.</span><span class="token function" >toInteger</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 1.7976931348623157e+308</span>

_<span class="token punctuation" >.</span><span class="token function" >toInteger</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>toLength <a class="fa-link" href="./toLength" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10542" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tolength" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toLength(value)</div>

<div data-render-html="/toLength"><p>转换 <code>value</code> 为用作类数组对象的长度整数。
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="http://ecma-international.org/ecma-262/6.0/#sec-tolength" target="_blank"><code>ToLength</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的整数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toLength</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >toLength</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

_<span class="token punctuation" >.</span><span class="token function" >toLength</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4294967295</span>

_<span class="token punctuation" >.</span><span class="token function" >toLength</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>toNumber <a class="fa-link" href="./toNumber" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10568" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tonumber" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toNumber(value)</div>

<div data-render-html="/toNumber"><p>转换 <code>value</code> 为数值</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要处理的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回数值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toNumber</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >toNumber</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 5e-324</span>

_<span class="token punctuation" >.</span><span class="token function" >toNumber</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => Infinity</span>

_<span class="token punctuation" >.</span><span class="token function" >toNumber</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>toPlainObject <a class="fa-link" href="./toPlainObject" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10606" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.toplainobject" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toPlainObject(value)</div>

<div data-render-html="/toPlainObject"><p>转换 <code>value</code> 为普通对象。
包括继承的可枚举属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的普通对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >assign</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2 }</span>

_<span class="token punctuation" >.</span><span class="token function" >assign</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >toPlainObject</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2, 'c': 3 }</span>
</code></pre>
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<div data-render-page="entry"><h2>toSafeInteger <a class="fa-link" href="./toSafeInteger" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10633" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tosafeinteger" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toSafeInteger(value)</div>

<div data-render-html="/toSafeInteger"><p>转换 <code>value</code> 为安全整数。
安全整数可以用于比较和准确的表示。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的整数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toSafeInteger</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >toSafeInteger</span><span class="token punctuation" >(</span>Number<span class="token punctuation" >.</span>MIN_VALUE<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0</span>

_<span class="token punctuation" >.</span><span class="token function" >toSafeInteger</span><span class="token punctuation" >(</span><span class="token number" >Infinity</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 9007199254740991</span>

_<span class="token punctuation" >.</span><span class="token function" >toSafeInteger</span><span class="token punctuation" >(</span><span class="token string" >'3'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>
</code></pre>
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<div data-render-page="entry"><h2>toString <a class="fa-link" href="./toString" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10657" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tostring" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toString(value)</div>

<div data-render-html="/toString"><p>如果 <code>value</code> 不是字符串，将其转换为字符串。
<code>null</code> 和 <code>undefined</code> 将返回空字符串。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toString</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ''</span>

_<span class="token punctuation" >.</span><span class="token function" >toString</span><span class="token punctuation" >(</span><span class="token operator" >-</span><span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '-0'</span>

_<span class="token punctuation" >.</span><span class="token function" >toString</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '1,2,3'</span>
</code></pre>
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<div data-render-page="entry"><h2>add <a class="fa-link" href="./add" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13849" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.add" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.add(augend, addend)</div>

<div data-render-html="/add"><p>相加两个数</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">augend</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>相加的第一个数 </p>
</div></li>
<li><span class="param-name">addend</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>相加的第二个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回总和</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >add</span><span class="token punctuation" >(</span><span class="token number" >6</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 10</span>
</code></pre>
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<div data-render-page="entry"><h2>ceil <a class="fa-link" href="./ceil" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13883" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ceil" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.ceil(number, [precision&#x3D;0])</div>

<div data-render-html="/ceil"><p>根据 <code>precision</code> 向上舍入 <code>number</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">number</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要向上舍入的值 </p>
</div></li>
<li><span class="param-name">[precision&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>精度 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p>返回向上舍入的结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >ceil</span><span class="token punctuation" >(</span><span class="token number" >4.006</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 5</span>

_<span class="token punctuation" >.</span><span class="token function" >ceil</span><span class="token punctuation" >(</span><span class="token number" >6.004</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 6.01</span>

_<span class="token punctuation" >.</span><span class="token function" >ceil</span><span class="token punctuation" >(</span><span class="token number" >6040</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 6100</span>
</code></pre>
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<div data-render-page="entry"><h2>floor <a class="fa-link" href="./floor" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13905" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.floor" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.floor(number, [precision&#x3D;0])</div>

<div data-render-html="/floor"><p>根据 <code>precision</code> 向下保留 <code>number</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">number</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要向下保留的数 </p>
</div></li>
<li><span class="param-name">[precision&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>精度 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回向下保留的结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >floor</span><span class="token punctuation" >(</span><span class="token number" >4.006</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4</span>

_<span class="token punctuation" >.</span><span class="token function" >floor</span><span class="token punctuation" >(</span><span class="token number" >0.046</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0.04</span>

_<span class="token punctuation" >.</span><span class="token function" >floor</span><span class="token punctuation" >(</span><span class="token number" >4060</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4000</span>
</code></pre>
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<div data-render-page="entry"><h2>max <a class="fa-link" href="./max" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13924" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.max" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.max(array)</div>

<div data-render-html="/max"><p>计算 <code>array</code> 中最大的值。
如果 <code>array</code> 是 空的或者假值将会返回 undefined。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要计算的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回最大的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >max</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 8</span>

_<span class="token punctuation" >.</span><span class="token function" >max</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => undefined</span>
</code></pre>
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<div data-render-page="entry"><h2>maxBy <a class="fa-link" href="./maxBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13952" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.maxby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.maxBy(array, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/maxBy"><p>这个方法类似 <code>_.max</code>
除了它接受 <code>iteratee</code> 调用每一个元素，根据返回的 value 决定排序准则。
iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要遍历的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回最大值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >maxBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>n<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'n': 2 }</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` iteratee 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >maxBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token string" >'n'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'n': 2 }</span>
</code></pre>
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<div data-render-page="entry"><h2>mean <a class="fa-link" href="./mean" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13971" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.mean" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.mean(array)</div>

<div data-render-html="/mean"><p>计算 <code>array</code> 的平均值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要遍历的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回平均值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >mean</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 5</span>
</code></pre>
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<div data-render-page="entry"><h2>min <a class="fa-link" href="./min" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13991" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.min" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.min(array)</div>

<div data-render-html="/min"><p>计算 array 中最小的值。 如果 array 是 空的或者假值将会返回 undefined。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要计算的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回最小值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >min</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>

_<span class="token punctuation" >.</span><span class="token function" >min</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => undefined</span>
</code></pre>
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<div data-render-page="entry"><h2>minBy <a class="fa-link" href="./minBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14018" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.minby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.minBy(array, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/minBy"><p>这个方法类似 <code>_.min</code>。
除了它接受 iteratee 调用每一个元素，根据返回的 value 决定排序准则。 iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要遍历的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回最小值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >minBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>n<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'n': 1 }</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` iteratee 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >minBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token string" >'n'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'n': 1 }</span>
</code></pre>
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<div data-render-page="entry"><h2>round <a class="fa-link" href="./round" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14044" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.round" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.round(number, [precision&#x3D;0])</div>

<div data-render-html="/round"><p>根据 precision 四舍五入 number。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">number</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要四舍五入的值 </p>
</div></li>
<li><span class="param-name">[precision&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>精度 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p>返回四舍五入的结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >round</span><span class="token punctuation" >(</span><span class="token number" >4.006</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4</span>

_<span class="token punctuation" >.</span><span class="token function" >round</span><span class="token punctuation" >(</span><span class="token number" >4.006</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4.01</span>

_<span class="token punctuation" >.</span><span class="token function" >round</span><span class="token punctuation" >(</span><span class="token number" >4060</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4100</span>
</code></pre>
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<div data-render-page="entry"><h2>subtract <a class="fa-link" href="./subtract" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14060" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.subtract" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.subtract(minuend, subtrahend)</div>

<div data-render-html="/subtract"><p>两双相减</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">minuend</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>相减的第一个数 </p>
</div></li>
<li><span class="param-name">subtrahend</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>相减的第二个数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p>返回结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >subtract</span><span class="token punctuation" >(</span><span class="token number" >6</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 2</span>
</code></pre>
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<div data-render-page="entry"><h2>sum <a class="fa-link" href="./sum" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14087" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sum" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sum(array)</div>

<div data-render-html="/sum"><p>计算 <code>array</code> 中值的总和</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要遍历的数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回总和</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >sum</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 20</span>
</code></pre>
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<div data-render-page="entry"><h2>sumBy <a class="fa-link" href="./sumBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14115" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.sumby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.sumBy(array, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/sumBy"><p>这个方法类似 <code>_.sum</code>。
除了它接受 iteratee 调用每一个元素，根据返回的 value 决定如何计算。
iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">array</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>要遍历的数组 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回总和</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >4</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >8</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'n'</span><span class="token punctuation" >:</span> <span class="token number" >6</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >sumBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>n<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 20</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >sumBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> <span class="token string" >'n'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 20</span>
</code></pre>
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<div data-render-page="entry"><h2>templateSettings.imports._ <a class="fa-link" href="./templateSettings-imports-_" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1586" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.imports._</div>

<div data-render-html="/templateSettings-imports-_"><p><code>lodash</code> 函数的引用</p>
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<div data-render-page="entry"><h2>clamp <a class="fa-link" href="./clamp" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11907" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.clamp" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.clamp(number, [min], max)</div>

<div data-render-html="/clamp"><p>返回限制在 <code>min</code> 和 <code>max</code> 之间的值</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">number</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>被限制的值 </p>
</div></li>
<li><span class="param-name">[min]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>最小绝对值 </p>
</div></li>
<li><span class="param-name">max</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>最大绝对值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> [min, max] 中的一个</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >clamp</span><span class="token punctuation" >(</span><span class="token operator" >-</span><span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => -5</span>

_<span class="token punctuation" >.</span><span class="token function" >clamp</span><span class="token punctuation" >(</span><span class="token number" >10</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 5</span>
</code></pre>
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<div data-render-page="entry"><h2>inRange <a class="fa-link" href="./inRange" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11958" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.inrange" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.inRange(number, [start&#x3D;0], end)</div>

<div data-render-html="/inRange"><p>检查 <code>n</code> 是否在 <code>start</code> 与 <code>end</code> 之间，但不包括 <code>end</code>。
如果 <code>end</code> 没有指定，那么 <code>start</code> 设置为0。
如果 <code>start</code> 大于 <code>end</code>，那么参数会交换以便支持负范围。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">number</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要检查的值 </p>
</div></li>
<li><span class="param-name">[start&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>开始范围 </p>
</div></li>
<li><span class="param-name">end</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>结束范围 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果值在范围内返回<code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >1.2</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token number" >5.2</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >inRange</span><span class="token punctuation" >(</span><span class="token operator" >-</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >6</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>random <a class="fa-link" href="./random" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11998" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.random" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.random([min&#x3D;0], [max&#x3D;1], [floating])</div>

<div data-render-html="/random"><p>产生一个包括  <code>min</code> 与 <code>max</code> 之间的数。
如果只提供一个参数返回一个0到提供数之间的数。
如果 <code>floating</code> 设为 true，或者 <code>min</code> 或 <code>max</code> 是浮点数，结果返回浮点数。
<br>
<br>
<strong>注意:</strong> JavaScript 遵循 IEEE-754 标准处理无法预料的浮点数结果。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[min&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>最小值 </p>
</div></li>
<li><span class="param-name">[max&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>最大值 </p>
</div></li>
<li><span class="param-name">[floating]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>是否返回浮点数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回随机数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >random</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// =>  0 和 5 之间的数</span>

_<span class="token punctuation" >.</span><span class="token function" >random</span><span class="token punctuation" >(</span><span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 同样是 0 和 5 之间的数</span>

_<span class="token punctuation" >.</span><span class="token function" >random</span><span class="token punctuation" >(</span><span class="token number" >5</span><span class="token punctuation" >,</span> <span class="token keyword" >true</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 0 和 5 之间的浮点数</span>

_<span class="token punctuation" >.</span><span class="token function" >random</span><span class="token punctuation" >(</span><span class="token number" >1.2</span><span class="token punctuation" >,</span> <span class="token number" >5.2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// =>  1.2 和 5.2 之间的浮点数</span>
</code></pre>
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<div data-render-page="entry"><h2>assign <a class="fa-link" href="./assign" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10703" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.assign" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.assign(object, [sources])</div>

<div data-render-html="/assign"><p>分配来源对象的可枚举属性到目标对象上。
来源对象的应用规则是从左到右，随后的下一个对象的属性会覆盖上一个对象的属性。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象，参考自
<a href="https://mdn.io/Object/assign" target="_blank"><code>Object.assign</code></a>.</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">[sources]</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >Bar</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>e <span class="token operator" >=</span> <span class="token number" >5</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>d <span class="token operator" >=</span> <span class="token number" >4</span><span class="token punctuation" >;</span>
Bar<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>f <span class="token operator" >=</span> <span class="token number" >6</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >assign</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >new</span> <span class="token class-name" >Bar</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'c': 3, 'e': 5 }</span>
</code></pre>
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<div data-render-page="entry"><h2>assignIn <span class="aliases">extend</span> <a class="fa-link" href="./assignIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10736" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.assignin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.assignIn(object, [sources])</div>

<div data-render-html="/assignIn"><p>这个方法类似 <code>_.assign</code>。
除了它会遍历并继承来源对象的属性。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">[sources]</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >Bar</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>d <span class="token operator" >=</span> <span class="token number" >4</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>
Bar<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>e <span class="token operator" >=</span> <span class="token number" >5</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >assignIn</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >new</span> <span class="token class-name" >Bar</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5 }</span>
</code></pre>
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<div data-render-page="entry"><h2>assignInWith <span class="aliases">extendWith</span> <a class="fa-link" href="./assignInWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10767" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.assigninwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.assignInWith(object, sources, [customizer])</div>

<div data-render-html="/assignInWith"><p>这个方法类似 <code>_.assignIn</code>。
除了它接受一个 customizer<code>决定如何分配值。
如果</code>customizer<code>返回</code>undefined<code>将会由分配处理方法代替。</code>customizer` 会传入5个参数：(objValue, srcValue, key, object, source)。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">sources</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数决定分配的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >,</span> srcValue<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> _<span class="token punctuation" >.</span><span class="token function" >isUndefined</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >)</span> <span class="token operator" >?</span> srcValue <span class="token punctuation" >:</span> objValue<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> defaults <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partialRight</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>assignInWith<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >defaults</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2 }</span>
</code></pre>
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<div data-render-page="entry"><h2>assignWith <a class="fa-link" href="./assignWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10797" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.assignwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.assignWith(object, sources, [customizer])</div>

<div data-render-html="/assignWith"><p>这个方法类似 <code>_.assign</code>。
除了它接受一个 customizer<code>决定如何分配值。
如果</code>customizer<code>返回</code>undefined<code>将会由分配处理方法代替。</code>customizer` 会传入5个参数：(objValue, srcValue, key, object, source)。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">sources</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数决定分配的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >,</span> srcValue<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> _<span class="token punctuation" >.</span><span class="token function" >isUndefined</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >)</span> <span class="token operator" >?</span> srcValue <span class="token punctuation" >:</span> objValue<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> defaults <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >partialRight</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>assignWith<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >defaults</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'b': 2 }</span>
</code></pre>
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<div data-render-page="entry"><h2>at <a class="fa-link" href="./at" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10820" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.at" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.at(object, [paths])</div>

<div data-render-html="/at"><p>根据 <code>object</code> 的路径获取值为数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[paths]</span> <span class="param-type">(...(string|string[])</span> <div data-render-html="/#synthetic"><p>要获取的对象的元素路径，单独指定或者指定在数组中 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回选中值的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >at</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a[0].b.c'</span><span class="token punctuation" >,</span> <span class="token string" >'a[1]'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 4]</span>

_<span class="token punctuation" >.</span><span class="token function" >at</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'c']</span>
</code></pre>
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<div data-render-page="entry"><h2>create <a class="fa-link" href="./create" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10856" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.create" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.create(prototype, [properties])</div>

<div data-render-html="/create"><p>创建一个继承 <code>prototype</code> 的对象。
如果提供了 <code>properties</code>，它的可枚举属性会被分配到创建的对象上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">prototype</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要继承的对象 </p>
</div></li>
<li><span class="param-name">[properties]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>待分配的属性 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Shape</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>x <span class="token operator" >=</span> <span class="token number" >0</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>y <span class="token operator" >=</span> <span class="token number" >0</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >function</span> <span class="token function" >Circle</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  Shape<span class="token punctuation" >.</span><span class="token function" >call</span><span class="token punctuation" >(</span><span class="token keyword" >this</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Circle<span class="token punctuation" >.</span>prototype <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span>Shape<span class="token punctuation" >.</span>prototype<span class="token punctuation" >,</span> <span class="token punctuation" >{</span>
  <span class="token string" >'constructor'</span><span class="token punctuation" >:</span> Circle
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> circle <span class="token operator" >=</span> <span class="token keyword" >new</span> <span class="token class-name" >Circle</span><span class="token punctuation" >;</span>
circle <span class="token keyword" >instanceof</span> <span class="token class-name" >Circle</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

circle <span class="token keyword" >instanceof</span> <span class="token class-name" >Shape</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>defaults <a class="fa-link" href="./defaults" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10879" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.defaults" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.defaults(object, [sources])</div>

<div data-render-html="/defaults"><p>分配来源对象的可枚举属性到目标对象所有解析为 <code>undefined</code> 的属性上。
来源对象从左到右应用。
一旦设置了相同属性的值，后续的将被忽略掉。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">[sources]</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >defaults</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'user': 'barney', 'age': 36 }</span>
</code></pre>
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<div data-render-page="entry"><h2>defaultsDeep <a class="fa-link" href="./defaultsDeep" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10901" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.defaultsdeep" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.defaultsDeep(object, [sources])</div>

<div data-render-html="/defaultsDeep"><p>这个方法类似 <code>_.defaults</code>，除了它会递归分配默认属性。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">[sources]</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >defaultsDeep</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'name'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'name'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'user': { 'name': 'barney', 'age': 36 } }</span>
</code></pre>
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<div data-render-page="entry"><h2>findKey <a class="fa-link" href="./findKey" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10940" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.findkey" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.findKey(object, [predicate&#x3D;_.identity])</div>

<div data-render-html="/findKey"><p>这个方法类似 <code>_.find</code>。
除了它返回最先被 <code>predicate</code> 判断为真值的元素 key，而不是元素本身。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>需要检索的对象 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string|undefined)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配的 key，否则返回 <code>undefined</code>。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'barney'</span><span class="token punctuation" >:</span>  <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token string" >'fred'</span><span class="token punctuation" >:</span>    <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token string" >'pebbles'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >findKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>age <span class="token operator" >&lt;</span> <span class="token number" >40</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'barney' (无法保证遍历的顺序)</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'pebbles'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'barney'</span>
</code></pre>
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<div data-render-page="entry"><h2>findLastKey <a class="fa-link" href="./findLastKey" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10977" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.findlastkey" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.findLastKey(object, [predicate&#x3D;_.identity])</div>

<div data-render-html="/findLastKey"><p>这个方法类似 <code>_.findKey</code>。
不过它是反方向开始遍历的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>需要检索的对象 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string|undefined)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回匹配的 key，否则返回 <code>undefined</code>。</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'barney'</span><span class="token punctuation" >:</span>  <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token string" >'fred'</span><span class="token punctuation" >:</span>    <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token string" >'pebbles'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span>  <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >findLastKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>age <span class="token operator" >&lt;</span> <span class="token number" >40</span><span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 返回 'pebbles'， `_.findKey` 会返回 'barney'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matches` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'barney'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.matchesProperty` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'active'</span><span class="token punctuation" >,</span> <span class="token keyword" >false</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred'</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >findLastKey</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'pebbles'</span>
</code></pre>
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<div data-render-page="entry"><h2>forIn <a class="fa-link" href="./forIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11006" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.forin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forIn(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forIn"><p>使用 <code>iteratee</code> 遍历对象的自身和继承的可枚举属性。
iteratee 会传入3个参数：(value, key, object)。
如果返回 false，iteratee 会提前退出遍历。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >forIn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 'a', 'b', 然后 'c' (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>forInRight <a class="fa-link" href="./forInRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11036" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.forinright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forInRight(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forInRight"><p>这个方法类似 <code>_.forIn</code>。
除了它是反方向开始遍历的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >forInRight</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 'c', 'b', 然后 'a'， `_.forIn` 会输出 'a', 'b', 然后 'c'</span>
</code></pre>
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<div data-render-page="entry"><h2>forOwn <a class="fa-link" href="./forOwn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11066" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.forown" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forOwn(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forOwn"><p>使用 <code>iteratee</code> 遍历自身的可枚举属性。
iteratee 会传入3个参数：(value, key, object)。 如果返回 false，iteratee 会提前退出遍历。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >forOwn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 'a' 然后 'b' (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>forOwnRight <a class="fa-link" href="./forOwnRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11093" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.forownright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.forOwnRight(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/forOwnRight"><p>这个方法类似 <code>_.forOwn</code>。 除了它是反方向开始遍历的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >forOwnRight</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出 'b' 然后 'a'， `_.forOwn` 会输出 'a' 然后 'b'</span>
</code></pre>
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<div data-render-page="entry"><h2>functions <a class="fa-link" href="./functions" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11117" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.functions" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.functions(object)</div>

<div data-render-html="/functions"><p>返回一个 function 对象自身可枚举属性名的数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包含属性名的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'b'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >functions</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b']</span>
</code></pre>
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<div data-render-page="entry"><h2>functionsIn <a class="fa-link" href="./functionsIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11141" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.functionsin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.functionsIn(object)</div>

<div data-render-html="/functionsIn"><p>返回一个 function 对象自身和继承的可枚举属性名的数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包含属性名的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'b'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >functionsIn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c']</span>
</code></pre>
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<div data-render-page="entry"><h2>get <a class="fa-link" href="./get" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11169" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.get" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.get(object, path, [defaultValue])</div>

<div data-render-html="/get"><p>根据对象路径获取值。
如果解析 value 是 <code>undefined</code> 会以 <code>defaultValue</code> 取代。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要获取的对象路径 </p>
</div></li>
<li><span class="param-name">[defaultValue]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>如果解析值是 <code>undefined</code>，这值会被返回 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回解析的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token keyword" >get</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token keyword" >get</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'0'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token keyword" >get</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a.b.c'</span><span class="token punctuation" >,</span> <span class="token string" >'default'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'default'</span>
</code></pre>
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<div data-render-page="entry"><h2>has <a class="fa-link" href="./has" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11200" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.has" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.has(object, path)</div>

<div data-render-html="/has"><p>检查 <code>path</code> 是否是对象的直接属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要检查的路径 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果存在返回 true，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >has</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >has</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >has</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >has</span><span class="token punctuation" >(</span>other<span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>hasIn <a class="fa-link" href="./hasIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11229" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.hasin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.hasIn(object, path)</div>

<div data-render-html="/hasIn"><p>检查 <code>path</code> 是否是对象的直接 或者 继承属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要检查的路径 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果存在返回 true，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >create</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >hasIn</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >hasIn</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >hasIn</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >hasIn</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>invert <a class="fa-link" href="./invert" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11252" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.invert" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.invert(object, [multiVal])</div>

<div data-render-html="/invert"><p>创建一个键值倒置的对象。
如果 <code>object</code> 有重复的值，后面的值会覆盖前面的值。
如果 <code>multiVal</code> 为 true，重复的值则组成数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要倒置的对象 </p>
</div></li>
<li><span class="param-name">[multiVal]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>每个 key 允许多个值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的倒置的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >invert</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '1': 'c', '2': 'b' }</span>
</code></pre>
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<div data-render-page="entry"><h2>invertBy <a class="fa-link" href="./invertBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11279" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.invertby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.invertBy(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/invertBy"><p>这个方法类似 <code>_.invert</code>。
除了它接受 iteratee 调用每一个元素，可在返回值中定制key。
iteratee 会传入1个参数：(value)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要倒置的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会调用每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的倒置的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >invertBy</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '1': ['a', 'c'], '2': ['b'] }</span>

_<span class="token punctuation" >.</span><span class="token function" >invertBy</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token string" >'group'</span> <span class="token operator" >+</span> value<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'group1': ['a', 'c'], 'group2': ['b'] }</span>
</code></pre>
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<div data-render-page="entry"><h2>invoke <a class="fa-link" href="./invoke" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11303" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.invoke" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.invoke(object, path, [args])</div>

<div data-render-html="/invoke"><p>调用对象路径的方法</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要调用方法的路径 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>调用方法的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回调用方法的结果</p>
<p>var object = { &#39;a&#39;: [{ &#39;b&#39;: { &#39;c&#39;: [1, 2, 3, 4] } }] };</p>
<p>_.invoke(object, &#39;a[0].b.c.slice&#39;, 1, 3);
// =&gt; [2, 3]</p>
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<div data-render-page="entry"><h2>keys <a class="fa-link" href="./keys" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11332" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.keys" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.keys(object)</div>

<div data-render-html="/keys"><p>创建 <code>object</code> 自身可枚举属性名为一个数组。
<br>
<br>
<strong>注意:</strong> 非对象的值会被强制转换为对象，查看
<a href="http://ecma-international.org/ecma-262/6.0/#sec-object.keys" target="_blank">ES spec</a>
了解详情</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包含属性名的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >keys</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b'] (无法保证遍历的顺序)</span>

_<span class="token punctuation" >.</span><span class="token function" >keys</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['0', '1']</span>
</code></pre>
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<div data-render-page="entry"><h2>keysIn <a class="fa-link" href="./keysIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11372" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.keysin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.keysIn(object)</div>

<div data-render-html="/keysIn"><p>创建 <code>object</code> 自身 或 继承的可枚举属性名为一个数组。
<br>
<br>
<strong>注意:</strong> 非对象的值会被强制转换为对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包含属性名的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >keysIn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c'] (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>mapKeys <a class="fa-link" href="./mapKeys" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11408" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.mapkeys" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.mapKeys(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/mapKeys"><p>反向版 <code>_.mapValues</code>。
这个方法创建一个对象，对象的值与源对象相同，但 key 是通过 <code>iteratee</code> 产生的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回映射后的新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >mapKeys</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> key <span class="token operator" >+</span> value<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a1': 1, 'b2': 2 }</span>
</code></pre>
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<div data-render-page="entry"><h2>mapValues <a class="fa-link" href="./mapValues" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11442" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.mapvalues" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.mapValues(object, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/mapValues"><p>创建一个对象，对象的key相同，值是通过 <code>iteratee</code> 产生的。
iteratee 会传入3个参数： (value, key, object)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回映射后的对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'fred'</span><span class="token punctuation" >:</span>    <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token string" >'pebbles'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >mapValues</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span> <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>age<span class="token punctuation" >;</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'fred': 40, 'pebbles': 1 } (无法保证遍历的顺序)</span>

<span class="token comment" spellcheck="true">// 使用了 `_.property` 的回调结果</span>
_<span class="token punctuation" >.</span><span class="token function" >mapValues</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'fred': 40, 'pebbles': 1 } (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>merge <a class="fa-link" href="./merge" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11479" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.merge" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.merge(object, [sources])</div>

<div data-render-html="/merge"><p>递归合并来源对象的自身和继承的可枚举属性到目标对象。
跳过来源对象解析为 <code>undefined</code> 的属性。
数组和普通对象会递归合并，其他对象和值会被直接分配。
来源对象从左到右分配，后续的来源对象属性会覆盖之前分配的属性。
<br>
<br>
<strong>注意:</strong> 这方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">[sources]</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'data'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> ages <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'data'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >merge</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> ages<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] }</span>
</code></pre>
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<div data-render-page="entry"><h2>mergeWith <a class="fa-link" href="./mergeWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11516" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.mergewith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.mergeWith(object, sources, customizer)</div>

<div data-render-html="/mergeWith"><p>这个方法类似 <code>_.merge</code>。
除了它接受一个 <code>customizer</code> 决定如何合并。
如果 <code>customizer</code> 返回 <code>undefined</code> 将会由合并处理方法代替。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">sources</span> <span class="param-type">(...Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">customizer</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个方法决定如何合并 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >customizer</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >,</span> srcValue<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >if</span> <span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span>objValue<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> objValue<span class="token punctuation" >.</span><span class="token function" >concat</span><span class="token punctuation" >(</span>srcValue<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'fruits'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'apple'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
  <span class="token string" >'vegetables'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'beet'</span><span class="token punctuation" >]</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> other <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'fruits'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'banana'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
  <span class="token string" >'vegetables'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'carrot'</span><span class="token punctuation" >]</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >mergeWith</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> other<span class="token punctuation" >,</span> customizer<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] }</span>
</code></pre>
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<div data-render-page="entry"><h2>omit <a class="fa-link" href="./omit" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11537" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.omit" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.omit(object, [props])</div>

<div data-render-html="/omit"><p>反向版 <code>_.pick</code>。
这个方法返回忽略属性之外的自身和继承的可枚举属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[props]</span> <span class="param-type">(...(string|string[])</span> <div data-render-html="/#synthetic"><p>要被忽略的属性，单独指定或指定在数组中 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token string" >'2'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >omit</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'b': '2' }</span>
</code></pre>
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<div data-render-page="entry"><h2>omitBy <a class="fa-link" href="./omitBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11562" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.omitby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.omitBy(object, [predicate&#x3D;_.identity])</div>

<div data-render-html="/omitBy"><p>反向版 <code>_.pickBy</code>。
这个方法返回经 <code>predicate</code> 判断不是真值的属性的自身和继承的可枚举属性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会调用每一个属性 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token string" >'2'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >omitBy</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isNumber<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'b': '2' }</span>
</code></pre>
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<div data-render-page="entry"><h2>pick <a class="fa-link" href="./pick" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11585" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pick" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pick(object, [props])</div>

<div data-render-html="/pick"><p>创建一个从 <code>object</code> 中选中的属性的对象。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[props]</span> <span class="param-type">(...(string|string[])</span> <div data-render-html="/#synthetic"><p>要选中的属性名，单独指定或指定在数组中 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token string" >'2'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >pick</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'c': 3 }</span>
</code></pre>
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<div data-render-page="entry"><h2>pickBy <a class="fa-link" href="./pickBy" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11606" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pickby" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pickBy(object, [predicate&#x3D;_.identity])</div>

<div data-render-html="/pickBy"><p>创建一个从 <code>object</code> 中经 <code>predicate</code> 判断为真值的属性为对象。
predicate 会传入1个参数：(value)</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[predicate&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会调用每一个属性 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token string" >'2'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >pickBy</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>isNumber<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': 1, 'c': 3 }</span>
</code></pre>
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<div data-render-page="entry"><h2>result <a class="fa-link" href="./result" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11637" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.result" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.result(object, path, [defaultValue])</div>

<div data-render-html="/result"><p>这个方法类似 <code>_.get</code>。
除了如果解析到的值是一个函数的话，就绑定 <code>this</code> 到这个函数并返回执行后的结果。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要解析的属性路径 </p>
</div></li>
<li><span class="param-name">[defaultValue]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>如果值是 <code>undefined</code>，返回这个值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回解析后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c1'</span><span class="token punctuation" >:</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token string" >'c2'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >result</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c1'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

_<span class="token punctuation" >.</span><span class="token function" >result</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c2'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4</span>

_<span class="token punctuation" >.</span><span class="token function" >result</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c3'</span><span class="token punctuation" >,</span> <span class="token string" >'default'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'default'</span>

_<span class="token punctuation" >.</span><span class="token function" >result</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c3'</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'default'</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'default'</span>
</code></pre>
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<div data-render-page="entry"><h2>set <a class="fa-link" href="./set" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11675" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.set" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.set(object, path, value)</div>

<div data-render-html="/set"><p>设置值到对象对应的属性路径上，如果没有则创建这部分路径。
缺少的索引属性会创建为数组，而缺少的属性会创建为对象。
使用 <code>_.setWith</code> 定制创建。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要修改的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要设置的对象路径 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要设置的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token keyword" >set</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c'</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>object<span class="token punctuation" >.</span>a<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span><span class="token punctuation" >.</span>b<span class="token punctuation" >.</span>c<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 4</span>

_<span class="token punctuation" >.</span><span class="token keyword" >set</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'x[0].y.z'</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>object<span class="token punctuation" >.</span>x<span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >]</span><span class="token punctuation" >.</span>y<span class="token punctuation" >.</span>z<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 5</span>
</code></pre>
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<div data-render-page="entry"><h2>setWith <a class="fa-link" href="./setWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11700" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.setwith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.setWith(object, path, value, [customizer])</div>

<div data-render-html="/setWith"><p>这个方法类似 <code>_.set</code>。
除了它接受一个 <code>customizer</code> 决定如何设置对象路径的值。
如果 <code>customizer</code> 返回 <code>undefined</code> 将会有它的处理方法代替。
<code>customizer</code> 会传入3个参数：(nsValue, key, nsObject)
 <strong>注意:</strong> 这个方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要修改的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要设置的对象路径 </p>
</div></li>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要设置的值 </p>
</div></li>
<li><span class="param-name">[customizer]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数决定如何分配值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >setWith</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'0'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'length'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'[0][1][2]'</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> Object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '0': { '1': { '2': 3 }, 'length': 2 } }</span>
</code></pre>
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<div data-render-page="entry"><h2>toPairs <a class="fa-link" href="./toPairs" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11725" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.topairs" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toPairs(object)</div>

<div data-render-html="/toPairs"><p>创建一个对象自身可枚举属性的键值对数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回键值对的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >toPairs</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['a', 1], ['b', 2]] (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>toPairsIn <a class="fa-link" href="./toPairsIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11749" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.topairsin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toPairsIn(object)</div>

<div data-render-html="/toPairsIn"><p>创建一个对象自身和继承的可枚举属性的键值对数组。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回键值对的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >toPairsIn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [['a', 1], ['b', 2], ['c', 1]] (无法保证遍历的顺序)</span>
</code></pre>
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<div data-render-page="entry"><h2>transform <a class="fa-link" href="./transform" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11780" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.transform" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.transform(object, [iteratee&#x3D;_.identity], [accumulator])</div>

<div data-render-html="/transform"><p><code>_.reduce</code> 的代替方法。
这个方法会改变对象为一个新的 <code>accumulator</code> 对象，来自每一次经 <code>iteratee</code> 处理自身可枚举对象的结果。
每次调用可能会改变 <code>accumulator</code> 对象。
iteratee 会传入4个对象：(accumulator, value, key, object)。
如果返回 <code>false</code>，iteratee 会提前退出。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Array|Object)</span> <div data-render-html="/#synthetic"><p>要遍历的对象 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
<li><span class="param-name">[accumulator]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>定制叠加的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回叠加后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >transform</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>result<span class="token punctuation" >,</span> n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  result<span class="token punctuation" >.</span><span class="token function" >push</span><span class="token punctuation" >(</span>n <span class="token operator" >*</span><span class="token operator" >=</span> n<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token keyword" >return</span> n <span class="token operator" >%</span> <span class="token number" >2</span> <span class="token operator" >==</span> <span class="token number" >0</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, 9]</span>

_<span class="token punctuation" >.</span><span class="token function" >transform</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>result<span class="token punctuation" >,</span> value<span class="token punctuation" >,</span> key<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token punctuation" >(</span>result<span class="token punctuation" >[</span>value<span class="token punctuation" >]</span> <span class="token operator" >||</span> <span class="token punctuation" >(</span>result<span class="token punctuation" >[</span>value<span class="token punctuation" >]</span> <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >push</span><span class="token punctuation" >(</span>key<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span><span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { '1': ['a', 'c'], '2': ['b'] }</span>
</code></pre>
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<div data-render-page="entry"><h2>unset <a class="fa-link" href="./unset" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11828" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unset" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unset(object, path)</div>

<div data-render-html="/unset"><p>移除对象路径的属性。
 <strong>注意:</strong> 这个方法会改变源对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要修改的对象 </p>
</div></li>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要移除的对象路径 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 移除成功返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >7</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
_<span class="token punctuation" >.</span><span class="token function" >unset</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': [{ 'b': {} }] };</span>

_<span class="token punctuation" >.</span><span class="token function" >unset</span><span class="token punctuation" >(</span>object<span class="token punctuation" >,</span> <span class="token string" >'a[0].b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'a': [{ 'b': {} }] };</span>
</code></pre>
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<div data-render-page="entry"><h2>values <a class="fa-link" href="./values" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11857" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.values" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.values(object)</div>

<div data-render-html="/values"><p>创建 <code>object</code> 自身可枚举属性的值为数组
<br>
<br>
<strong>注意:</strong> 非对象的值会强制转换为对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象属性的值的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >values</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2] (无法保证遍历的顺序)</span>

_<span class="token punctuation" >.</span><span class="token function" >values</span><span class="token punctuation" >(</span><span class="token string" >'hi'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['h', 'i']</span>
</code></pre>
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this.page.identifier = 'values';
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<div data-render-page="entry"><h2>valuesIn <a class="fa-link" href="./valuesIn" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L11883" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.valuesin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.valuesIn(object)</div>

<div data-render-html="/valuesIn"><p>创建 <code>object</code> 自身和继承的可枚举属性的值为数组
<br>
<br>
<strong>注意:</strong> 非对象的值会强制转换为对象</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> Returns the array of property values.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >Foo</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>a <span class="token operator" >=</span> <span class="token number" >1</span><span class="token punctuation" >;</span>
  <span class="token keyword" >this</span><span class="token punctuation" >.</span>b <span class="token operator" >=</span> <span class="token number" >2</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

Foo<span class="token punctuation" >.</span>prototype<span class="token punctuation" >.</span>c <span class="token operator" >=</span> <span class="token number" >3</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >valuesIn</span><span class="token punctuation" >(</span><span class="token keyword" >new</span> <span class="token class-name" >Foo</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3] (无法保证遍历的顺序)</span>
</code></pre>
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this.page.identifier = 'valuesIn';
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<div data-render-page="entry"><h2>templateSettings <a class="fa-link" href="./templateSettings" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1538" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.templatesettings" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.templateSettings</div>

<div data-render-html="/templateSettings"><p>(Object): 默认情况下，这些都是用于处理lodash的模板，类似 Ruby 的嵌入式 (ERB)。
可以改变接下来的设置用新的方式代替。</p>
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* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings';
};

(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');

s.src = '//lodash-zh.disqus.com/embed.js';

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<div data-render-page="entry"><h2>templateSettings.escape <a class="fa-link" href="./templateSettings-escape" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1546" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.escape</div>

<div data-render-html="/templateSettings-escape"><p>(RegExp): 用于检测要进行HTML转义 <code>data</code> 的属性值。</p>
</div>

<div id="disqus_thread" style="margin-top:50px;"></div>
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* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings.escape';
};

(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');

s.src = '//lodash-zh.disqus.com/embed.js';

s.setAttribute('data-timestamp', +new Date());
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<div data-render-page="entry"><h2>templateSettings.evaluate <a class="fa-link" href="./templateSettings-evaluate" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1554" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.evaluate</div>

<div data-render-html="/templateSettings-evaluate"><p>(RegExp): 用于检测表达式代码</p>
</div>

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* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings.evaluate';
};

(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');

s.src = '//lodash-zh.disqus.com/embed.js';

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<div data-render-page="entry"><h2>templateSettings.imports <a class="fa-link" href="./templateSettings-imports" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1578" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.imports</div>

<div data-render-html="/templateSettings-imports"><p>(Object): 用于导入变量到编译模板</p>
</div>

<div id="disqus_thread" style="margin-top:50px;"></div>
<script>
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* RECOMMENDED CONFIGURATION VARIABLES: EDIT AND UNCOMMENT THE SECTION BELOW TO INSERT DYNAMIC VALUES FROM YOUR PLATFORM OR CMS.
* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings.imports';
};

(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');

s.src = '//lodash-zh.disqus.com/embed.js';

s.setAttribute('data-timestamp', +new Date());
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<div data-render-page="entry"><h2>templateSettings.interpolate <a class="fa-link" href="./templateSettings-interpolate" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1562" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.interpolate</div>

<div data-render-html="/templateSettings-interpolate"><p>(RegExp): 用于检测要插入的 <code>data</code> 的属性值。</p>
</div>

<div id="disqus_thread" style="margin-top:50px;"></div>
<script>
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* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings.interpolate';
};

(function() { // DON'T EDIT BELOW THIS LINE
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s.src = '//lodash-zh.disqus.com/embed.js';

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<div data-render-page="entry"><h2>templateSettings.variable <a class="fa-link" href="./templateSettings-variable" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1570" title="View in source." target="github">source</a> </h2>
<div class="signature">_.templateSettings.variable</div>

<div data-render-html="/templateSettings-variable"><p>(string): 用于引用模板文本中的 <code>data</code> 对象</p>
</div>

<div id="disqus_thread" style="margin-top:50px;"></div>
<script>
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* LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables
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/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'templateSettings.variable';
};

(function() { // DON'T EDIT BELOW THIS LINE
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<div data-render-page="entry"><h2>VERSION <a class="fa-link" href="./VERSION" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L14473" title="View in source." target="github">source</a> </h2>
<div class="signature">_.VERSION</div>

<div data-render-html="/VERSION"><p>(string): 语义化版本号</p>
</div>

<div id="disqus_thread" style="margin-top:50px;"></div>
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*/
/*
var disqus_config = function () {
this.page.url = PAGE_URL; // Replace PAGE_URL with your page's canonical URL variable
this.page.identifier = PAGE_IDENTIFIER; // Repla<p></p>ce PAGE_IDENTIFIER with your page's unique identifier variable
};
*/

var disqus_config = function () {
this.page.identifier = 'VERSION';
};

(function() { // DON'T EDIT BELOW THIS LINE
var d = document, s = d.createElement('script');

s.src = '//lodash-zh.disqus.com/embed.js';

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<div data-render-page="entry"><h2>_ <a class="fa-link" href="./_" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1494" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash._" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_(value)</div>

<div data-render-html="/_"><p>创建一个经 <code>lodash</code> 包装后的对象会启用隐式链。返回的数组、集合、方法相互之间能够链式调用。
检索唯一值或返回原始值会自动解除链条并返回计算后的值，否则需要调用 <code>_#value</code> 方法解除链(即获得计算结果)。
<br>
<br>
显式链式调用，在任何情况下需要先用 <code>_#value</code> 解除链后，才能使用 <code>_.chain</code> 开启。
<br>
<br>
链式方法是惰性计算的，直到隐式或者显式调用了 <code>_#value</code> 才会执行计算。
<br>
<br>
惰性计算接受几种支持 shortcut fusion 的方法，
shortcut fusion 是一种通过合并链式 iteratee 调用从而大大降低迭代的次数以提高执行性能的方式。
部分链有资格 shortcut fusion，如果它至少有超过二百个元素的数组和任何只接受一个参数的 iteratees。
触发的方式是任何一个 shortcut fusion 有了变化。
<br>
<br>
链式方法支持定制版本，只要 <code>_#value</code> 包含或者间接包含在版本中。
<br>
<br>
除了 lodash 的自身方法，包装后的对象还支持  <code>Array</code> 的 <code>String</code> 的方法。
<br>
<br>
支持 <code>Array</code> 的方法:<br>
<code>concat</code>, <code>join</code>, <code>pop</code>, <code>push</code>, <code>shift</code>, <code>sort</code>, <code>splice</code>, 以及 <code>unshift</code>
<br>
<br>
支持 <code>String</code> 的方法:<br>
<code>replace</code> 以及 <code>split</code>
<br>
<br>
支持 shortcut fusion 的方法:<br>
<code>at</code>, <code>compact</code>, <code>drop</code>, <code>dropRight</code>, <code>dropWhile</code>, <code>filter</code>, <code>find</code>,
<code>findLast</code>, <code>head</code>, <code>initial</code>, <code>last</code>, <code>map</code>, <code>reject</code>, <code>reverse</code>, <code>slice</code>,
<code>tail</code>, <code>take</code>, <code>takeRight</code>, <code>takeRightWhile</code>, <code>takeWhile</code>, 以及 <code>toArray</code>
<br>
<br>
默认不支持 链式调用 的方法:<br>
<code>add</code>, <code>attempt</code>, <code>camelCase</code>, <code>capitalize</code>, <code>ceil</code>, <code>clamp</code>, <code>clone</code>,
<code>cloneDeep</code>, <code>cloneDeepWith</code>, <code>cloneWith</code>, <code>deburr</code>, <code>endsWith</code>, <code>eq</code>,
<code>escape</code>, <code>escapeRegExp</code>, <code>every</code>, <code>find</code>, <code>findIndex</code>, <code>findKey</code>, <code>findLast</code>,
<code>findLastIndex</code>, <code>findLastKey</code>, <code>floor</code>, <code>forEach</code>, <code>forEachRight</code>, <code>forIn</code>,
<code>forInRight</code>, <code>forOwn</code>, <code>forOwnRight</code>, <code>get</code>, <code>gt</code>, <code>gte</code>, <code>has</code>, <code>hasIn</code>,
<code>head</code>, <code>identity</code>, <code>includes</code>, <code>indexOf</code>, <code>inRange</code>, <code>invoke</code>, <code>isArguments</code>,
<code>isArray</code>, <code>isArrayBuffer</code>, <code>isArrayLike</code>, <code>isArrayLikeObject</code>, <code>isBoolean</code>,
<code>isBuffer</code>, <code>isDate</code>, <code>isElement</code>, <code>isEmpty</code>, <code>isEqual</code>, <code>isEqualWith</code>,
<code>isError</code>, <code>isFinite</code>, <code>isFunction</code>, <code>isInteger</code>, <code>isLength</code>, <code>isMap</code>,
<code>isMatch</code>, <code>isMatchWith</code>, <code>isNaN</code>, <code>isNative</code>, <code>isNil</code>, <code>isNull</code>, <code>isNumber</code>,
<code>isObject</code>, <code>isObjectLike</code>, <code>isPlainObject</code>, <code>isRegExp</code>, <code>isSafeInteger</code>,
<code>isSet</code>, <code>isString</code>, <code>isUndefined</code>, <code>isTypedArray</code>, <code>isWeakMap</code>, <code>isWeakSet</code>,
<code>join</code>, <code>kebabCase</code>, <code>last</code>, <code>lastIndexOf</code>, <code>lowerCase</code>, <code>lowerFirst</code>,
<code>lt</code>, <code>lte</code>, <code>max</code>, <code>maxBy</code>, <code>mean</code>, <code>min</code>, <code>minBy</code>, <code>noConflict</code>, <code>noop</code>,
<code>now</code>, <code>pad</code>, <code>padEnd</code>, <code>padStart</code>, <code>parseInt</code>, <code>pop</code>, <code>random</code>, <code>reduce</code>,
<code>reduceRight</code>, <code>repeat</code>, <code>result</code>, <code>round</code>, <code>runInContext</code>, <code>sample</code>,
<code>shift</code>, <code>size</code>, <code>snakeCase</code>, <code>some</code>, <code>sortedIndex</code>, <code>sortedIndexBy</code>,
<code>sortedLastIndex</code>, <code>sortedLastIndexBy</code>, <code>startCase</code>, <code>startsWith</code>, <code>subtract</code>,
<code>sum</code>, <code>sumBy</code>, <code>template</code>, <code>times</code>, <code>toLower</code>, <code>toInteger</code>, <code>toLength</code>,
<code>toNumber</code>, <code>toSafeInteger</code>, <code>toString</code>, <code>toUpper</code>, <code>trim</code>, <code>trimEnd</code>,
<code>trimStart</code>, <code>truncate</code>, <code>unescape</code>, <code>uniqueId</code>, <code>upperCase</code>, <code>upperFirst</code>,
<code>value</code>, 以及 <code>words</code>
<br>
<br>
支持 链式调用 的方法:<br>
<code>after</code>, <code>ary</code>, <code>assign</code>, <code>assignIn</code>, <code>assignInWith</code>, <code>assignWith</code>, <code>at</code>,
<code>before</code>, <code>bind</code>, <code>bindAll</code>, <code>bindKey</code>, <code>castArray</code>, <code>chain</code>, <code>chunk</code>,
<code>commit</code>, <code>compact</code>, <code>concat</code>, <code>conforms</code>, <code>constant</code>, <code>countBy</code>, <code>create</code>,
<code>curry</code>, <code>debounce</code>, <code>defaults</code>, <code>defaultsDeep</code>, <code>defer</code>, <code>delay</code>, <code>difference</code>,
<code>differenceBy</code>, <code>differenceWith</code>, <code>drop</code>, <code>dropRight</code>, <code>dropRightWhile</code>,
<code>dropWhile</code>, <code>fill</code>, <code>filter</code>, <code>flatten</code>, <code>flattenDeep</code>, <code>flattenDepth</code>,
<code>flip</code>, <code>flow</code>, <code>flowRight</code>, <code>fromPairs</code>, <code>functions</code>, <code>functionsIn</code>,
<code>groupBy</code>, <code>initial</code>, <code>intersection</code>, <code>intersectionBy</code>, <code>intersectionWith</code>,
<code>invert</code>, <code>invertBy</code>, <code>invokeMap</code>, <code>iteratee</code>, <code>keyBy</code>, <code>keys</code>, <code>keysIn</code>,
<code>map</code>, <code>mapKeys</code>, <code>mapValues</code>, <code>matches</code>, <code>matchesProperty</code>, <code>memoize</code>,
<code>merge</code>, <code>mergeWith</code>, <code>method</code>, <code>methodOf</code>, <code>mixin</code>, <code>negate</code>, <code>nthArg</code>,
<code>omit</code>, <code>omitBy</code>, <code>once</code>, <code>orderBy</code>, <code>over</code>, <code>overArgs</code>, <code>overEvery</code>,
<code>overSome</code>, <code>partial</code>, <code>partialRight</code>, <code>partition</code>, <code>pick</code>, <code>pickBy</code>, <code>plant</code>,
<code>property</code>, <code>propertyOf</code>, <code>pull</code>, <code>pullAll</code>, <code>pullAllBy</code>, <code>pullAt</code>, <code>push</code>,
<code>range</code>, <code>rangeRight</code>, <code>rearg</code>, <code>reject</code>, <code>remove</code>, <code>rest</code>, <code>reverse</code>,
<code>sampleSize</code>, <code>set</code>, <code>setWith</code>, <code>shuffle</code>, <code>slice</code>, <code>sort</code>, <code>sortBy</code>,
<code>splice</code>, <code>spread</code>, <code>tail</code>, <code>take</code>, <code>takeRight</code>, <code>takeRightWhile</code>,
<code>takeWhile</code>, <code>tap</code>, <code>throttle</code>, <code>thru</code>, <code>toArray</code>, <code>toPairs</code>, <code>toPairsIn</code>,
<code>toPath</code>, <code>toPlainObject</code>, <code>transform</code>, <code>unary</code>, <code>union</code>, <code>unionBy</code>,
<code>unionWith</code>, <code>uniq</code>, <code>uniqBy</code>, <code>uniqWith</code>, <code>unset</code>, <code>unshift</code>, <code>unzip</code>,
<code>unzipWith</code>, <code>values</code>, <code>valuesIn</code>, <code>without</code>, <code>wrap</code>, <code>xor</code>, <code>xorBy</code>,
<code>xorWith</code>, <code>zip</code>, <code>zipObject</code>, <code>zipObjectDeep</code>, 以及 <code>zipWith</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>需要被包装为 <code>lodash</code> 实例的值. </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 包装后的实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> wrapped <span class="token operator" >=</span> <span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 返回未包装的值</span>
wrapped<span class="token punctuation" >.</span><span class="token function" >reduce</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>add<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 6</span>

<span class="token comment" spellcheck="true">// 返回链式包装的值</span>
<span class="token keyword" >var</span> squares <span class="token operator" >=</span> wrapped<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>square<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span>squares<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >isArray</span><span class="token punctuation" >(</span>squares<span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>chain <a class="fa-link" href="./chain" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7163" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.chain" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.chain(value)</div>

<div data-render-html="/chain"><p>创建一个经 <code>lodash</code> 包装的对象以启用显式链模式，要解除链必须使用 <code>_#value</code> 方法。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要包装的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 包装的实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span>  <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>    <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> youngest <span class="token operator" >=</span> _
  <span class="token punctuation" >.</span><span class="token function" >chain</span><span class="token punctuation" >(</span>users<span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span><span class="token string" >'age'</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>o<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> o<span class="token punctuation" >.</span>user <span class="token operator" >+</span> <span class="token string" >' is '</span> <span class="token operator" >+</span> o<span class="token punctuation" >.</span>age<span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >head</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'pebbles is 1'</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.at <a class="fa-link" href="./prototype-at" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7238" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.at" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.at([paths])</div>

<div data-render-html="/prototype-at"><p>这个方法是 <code>_.at</code> 的包装版本</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[paths]</span> <span class="param-type">(...(string|string[])</span> <div data-render-html="/#synthetic"><p>要选择元素的属性路径， 单独指定或者数组 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 的包装实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >3</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

<span class="token function" >_</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >at</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a[0].b.c'</span><span class="token punctuation" >,</span> <span class="token string" >'a[1]'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 4]</span>

<span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >at</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'c']</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.chain <a class="fa-link" href="./prototype-chain" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7286" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.chain" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.chain()</div>

<div data-render-html="/prototype-chain"><p>开启包装对象的显式链。</p>
</div>

<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 的包装实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 不启用显式链</span>
<span class="token function" >_</span><span class="token punctuation" >(</span>users<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >head</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'user': 'barney', 'age': 36 }</span>

<span class="token comment" spellcheck="true">// 启用显式链</span>
<span class="token function" >_</span><span class="token punctuation" >(</span>users<span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >chain</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >head</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >pick</span><span class="token punctuation" >(</span><span class="token string" >'user'</span><span class="token punctuation" >)</span>
  <span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'user': 'barney' }</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.commit <a class="fa-link" href="./prototype-commit" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7315" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.commit" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.commit()</div>

<div data-render-html="/prototype-commit"><p>执行链式队列并返回结果</p>
</div>

<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 的包装实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> wrapped <span class="token operator" >=</span> <span class="token function" >_</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >push</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>

wrapped <span class="token operator" >=</span> wrapped<span class="token punctuation" >.</span><span class="token function" >commit</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>

wrapped<span class="token punctuation" >.</span><span class="token function" >last</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 3</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.next <a class="fa-link" href="./prototype-next" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7361" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.next" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.next()</div>

<div data-render-html="/prototype-next"><p>获得包装对象的下一个值，遵循 <a href="https://mdn.io/iteration_protocols#iterator" target="_blank">iterator 协议</a>。</p>
</div>

<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回下一个 iterator 值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> wrapped <span class="token operator" >=</span> <span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

wrapped<span class="token punctuation" >.</span><span class="token function" >next</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'done': false, 'value': 1 }</span>

wrapped<span class="token punctuation" >.</span><span class="token function" >next</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'done': false, 'value': 2 }</span>

wrapped<span class="token punctuation" >.</span><span class="token function" >next</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'done': true, 'value': undefined }</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.plant <a class="fa-link" href="./prototype-plant" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7415" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.plant" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.plant(value)</div>

<div data-render-html="/prototype-plant"><p>创建一个链式队列的拷贝，传入的值作为链式队列的值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>替换原值的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 的包装实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> wrapped <span class="token operator" >=</span> <span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>square<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> other <span class="token operator" >=</span> wrapped<span class="token punctuation" >.</span><span class="token function" >plant</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

other<span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [9, 16]</span>

wrapped<span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 4]</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.Symbol.iterator <a class="fa-link" href="./prototype-Symbol-iterator" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7388" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.symbol.iterator" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.Symbol.iterator()</div>

<div data-render-html="/prototype-Symbol-iterator"><p>启用包装对象为 iterable。</p>
</div>

<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包装对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> wrapped <span class="token operator" >=</span> <span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

wrapped<span class="token punctuation" >[</span>Symbol<span class="token punctuation" >.</span>iterator<span class="token punctuation" >]</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token operator" >===</span> wrapped<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

Array<span class="token punctuation" >.</span><span class="token keyword" >from</span><span class="token punctuation" >(</span>wrapped<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>prototype.value <span class="aliases">run, toJSON, valueOf</span> <a class="fa-link" href="./prototype-value" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7481" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.prototype.value" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.prototype.value()</div>

<div data-render-html="/prototype-value"><p>执行链式队列并提取解链后的值</p>
</div>

<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回解链后的值</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3]</span>
</code></pre>
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<div data-render-page="entry"><h2>tap <a class="fa-link" href="./tap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7190" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.tap(value, interceptor)</div>

<div data-render-html="/tap"><p>这个方法调用一个 <code>interceptor</code> 并返回 <code>value</code>。<code>interceptor</code> 传入一个参数：(value)
目的是 <code>进入</code> 链的中间以便执行操作。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>提供给 <code>interceptor</code> 的值 </p>
</div></li>
<li><span class="param-name">interceptor</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>调用函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>value</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >tap</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>array<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
   <span class="token comment" spellcheck="true">// 改变传入的数组</span>
   array<span class="token punctuation" >.</span><span class="token function" >pop</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
 <span class="token punctuation" >}</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >reverse</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>thru <a class="fa-link" href="./thru" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7215" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.thru" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.thru(value, interceptor)</div>

<div data-render-html="/thru"><p>这个方法类似 <code>_.tap</code>， 除了它返回 <code>interceptor</code> 的返回结果</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>提供给 <code>interceptor</code> 的值 </p>
</div></li>
<li><span class="param-name">interceptor</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>调用函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>interceptor</code> 的返回结果</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token function" >_</span><span class="token punctuation" >(</span><span class="token string" >'  abc  '</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >chain</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >trim</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >thru</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>value<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
   <span class="token keyword" >return</span> <span class="token punctuation" >[</span>value<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
 <span class="token punctuation" >}</span><span class="token punctuation" >)</span>
 <span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['abc']</span>
</code></pre>
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<div data-render-page="entry"><h2>wrapperFlatMap <a class="fa-link" href="./wrapperFlatMap" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L7336" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.wrapperflatmap" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.wrapperFlatMap([iteratee&#x3D;_.identity])</div>

<div data-render-html="/wrapperFlatMap"><p>这个方法是 <code>_.flatMap</code> 的包装版本。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function|Object|string)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 的包装实例</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >duplicate</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> <span class="token punctuation" >[</span>n<span class="token punctuation" >,</span> n<span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token function" >_</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >flatMap</span><span class="token punctuation" >(</span>duplicate<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1, 2, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>camelCase <a class="fa-link" href="./camelCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12058" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.camelcase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.camelCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/camelCase"><p>转换字符串为 <a href="https://en.wikipedia.org/wiki/CamelCase" target="_blank">驼峰写法</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回驼峰写法的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >camelCase</span><span class="token punctuation" >(</span><span class="token string" >'Foo Bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fooBar'</span>

_<span class="token punctuation" >.</span><span class="token function" >camelCase</span><span class="token punctuation" >(</span><span class="token string" >'--foo-bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fooBar'</span>

_<span class="token punctuation" >.</span><span class="token function" >camelCase</span><span class="token punctuation" >(</span><span class="token string" >'__foo_bar__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fooBar'</span>
</code></pre>
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<div data-render-page="entry"><h2>capitalize <a class="fa-link" href="./capitalize" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12076" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.capitalize" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.capitalize([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/capitalize"><p>转换字符串首字母为大写，剩下为小写。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要大写开头的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回大写开头的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >capitalize</span><span class="token punctuation" >(</span><span class="token string" >'FRED'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Fred'</span>
</code></pre>
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<div data-render-page="entry"><h2>deburr <a class="fa-link" href="./deburr" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12093" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.deburr" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.deburr([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/deburr"><p>转换 <a href="https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block" target="_blank">latin-1 supplementary letters</a>#Character_table) 为基本拉丁字母，并删除<a href="https://en.wikipedia.org/wiki/Combining_Diacritical_Marks" target="_blank">变音符</a>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >deburr</span><span class="token punctuation" >(</span><span class="token string" >'déjà vu'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'deja vu'</span>
</code></pre>
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<div data-render-page="entry"><h2>endsWith <a class="fa-link" href="./endsWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12119" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.endswith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.endsWith([string&#x3D;&#x27;&#x27;], [target], [position&#x3D;string.length])</div>

<div data-render-html="/endsWith"><p>检查给定的字符是否是字符串的结尾</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要检索的字符串 </p>
</div></li>
<li><span class="param-name">[target]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要检索字符 </p>
</div></li>
<li><span class="param-name">[position&#x3D;string.length]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>检索的位置 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果是结尾返回 <code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >endsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >endsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >endsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>escape <a class="fa-link" href="./escape" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12160" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.escape" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.escape([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/escape"><p>转义字符 &quot;&amp;&quot;, &quot;&lt;&quot;, &quot;&gt;&quot;, &#39;&quot;&#39;, &quot;&#39;&quot;, 以及 &quot;`&quot; 为HTML实体字符。
<br>
<br>
<strong>注意:</strong> 不会转义其他字符，如果需要，可以使用第三方库，例如 <a href="https://mths.be/he" target="_blank"><em>he</em></a>。
<br>
<br>
虽然 &quot;&gt;&quot; 是对称转义的，像是 &quot;&gt;&quot; 和 &quot;/&quot; 没有特殊的意义，所以不需要在 HTML 中转义。
除非它们是标签的一部分，或者是不带引号的属性值。
查看 <a href="https://mathiasbynens.be/notes/ambiguous-ampersands" target="_blank">Mathias Bynens 的文章</a>
(under &quot;semi-related fun fact&quot;) 了解详情
<br>
<br>
在 IE &lt; 9 中转义引号，因为会中断属性值或 HTML 注释，查看
<a href="https://html5sec.org/" target="_blank">HTML5 安全列表</a> 的 <a href="https://html5sec.org/#59" target="_blank">#59</a>,
<a href="https://html5sec.org/#102" target="_blank">#102</a>, <a href="https://html5sec.org/#108" target="_blank">#108</a>, 以及
<a href="https://html5sec.org/#133" target="_blank">#133</a> 了解详情
<br>
<br>
当解析为 HTML 时应该总是 <a href="http://wonko.com/post/html-escaping" target="_blank">引用属性值</a>
以减少 XSS 的可能性。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转义的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转义后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >escape</span><span class="token punctuation" >(</span><span class="token string" >'fred, barney, &amp; pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred, barney, &amp;amp; pebbles'</span>
</code></pre>
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<div data-render-page="entry"><h2>escapeRegExp <a class="fa-link" href="./escapeRegExp" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12181" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.escaperegexp" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.escapeRegExp([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/escapeRegExp"><p>转义<code>RegExp</code> 中特殊的字符 &quot;^&quot;, &quot;$&quot;, &quot;\&quot;, &quot;.&quot;, &quot;*&quot;, &quot;+&quot;,
&quot;?&quot;, &quot;(&quot;, &quot;)&quot;, &quot;[&quot;, &quot;]&quot;, &quot;{&quot;, &quot;}&quot;, 以及 &quot;|&quot;。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转义的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转义后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >escapeRegExp</span><span class="token punctuation" >(</span><span class="token string" >'[lodash](https://lodash.com/)'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '\[lodash\]\(https://lodash\.com/\)'</span>
</code></pre>
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<div data-render-page="entry"><h2>kebabCase <a class="fa-link" href="./kebabCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12207" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.kebabcase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.kebabCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/kebabCase"><p>转换字符串为 <a href="https://en.wikipedia.org/wiki/Letter_case#Special_case_styles" target="_blank">kebab case</a>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >kebabCase</span><span class="token punctuation" >(</span><span class="token string" >'Foo Bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo-bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >kebabCase</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo-bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >kebabCase</span><span class="token punctuation" >(</span><span class="token string" >'__foo_bar__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo-bar'</span>
</code></pre>
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<div data-render-page="entry"><h2>lowerCase <a class="fa-link" href="./lowerCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12230" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.lowercase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.lowerCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/lowerCase"><p>以空格分开单词并转换为小写。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回小写的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >lowerCase</span><span class="token punctuation" >(</span><span class="token string" >'--Foo-Bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >lowerCase</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >lowerCase</span><span class="token punctuation" >(</span><span class="token string" >'__FOO_BAR__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo bar'</span>
</code></pre>
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<div data-render-page="entry"><h2>lowerFirst <a class="fa-link" href="./lowerFirst" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12250" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.lowerfirst" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.lowerFirst([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/lowerFirst"><p>转换首字母为小写。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >lowerFirst</span><span class="token punctuation" >(</span><span class="token string" >'Fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred'</span>

_<span class="token punctuation" >.</span><span class="token function" >lowerFirst</span><span class="token punctuation" >(</span><span class="token string" >'FRED'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fRED'</span>
</code></pre>
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<div data-render-page="entry"><h2>pad <a class="fa-link" href="./pad" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12292" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.pad" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.pad([string&#x3D;&#x27;&#x27;], [length&#x3D;0], [chars&#x3D;&#x27; &#x27;])</div>

<div data-render-html="/pad"><p>如果字符串长度小于 <code>length</code> 则从左到右填充字符。
如果没法平均分配，则截断超出的长度。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要填充的字符串 </p>
</div></li>
<li><span class="param-name">[length&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>填充的长度 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;&#x27; &#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>填充字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回填充后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >pad</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '  abc   '</span>

_<span class="token punctuation" >.</span><span class="token function" >pad</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >8</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '_-abc_-_'</span>

_<span class="token punctuation" >.</span><span class="token function" >pad</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc'</span>
</code></pre>
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<div data-render-page="entry"><h2>padEnd <a class="fa-link" href="./padEnd" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12328" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.padend" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.padEnd([string&#x3D;&#x27;&#x27;], [length&#x3D;0], [chars&#x3D;&#x27; &#x27;])</div>

<div data-render-html="/padEnd"><p>如果字符串长度小于 length 则在右侧填充字符。 如果超出长度则截断超出的部分。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要填充的字符串 </p>
</div></li>
<li><span class="param-name">[length&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>填充的长度 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;&#x27; &#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>填充字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> Returns 返回填充后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >padEnd</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc   '</span>

_<span class="token punctuation" >.</span><span class="token function" >padEnd</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc_-_'</span>

_<span class="token punctuation" >.</span><span class="token function" >padEnd</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc'</span>
</code></pre>
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<div data-render-page="entry"><h2>padStart <a class="fa-link" href="./padStart" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12354" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.padstart" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.padStart([string&#x3D;&#x27;&#x27;], [length&#x3D;0], [chars&#x3D;&#x27; &#x27;])</div>

<div data-render-html="/padStart"><p>如果字符串长度小于 length 则在左侧填充字符。 如果超出长度则截断超出的部分。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要填充的字符串 </p>
</div></li>
<li><span class="param-name">[length&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>填充的长度 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;&#x27; &#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>填充字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> Returns 返回填充后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >padStart</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '   abc'</span>

_<span class="token punctuation" >.</span><span class="token function" >padStart</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >6</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '_-_abc'</span>

_<span class="token punctuation" >.</span><span class="token function" >padStart</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc'</span>
</code></pre>
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<div data-render-page="entry"><h2>parseInt <a class="fa-link" href="./parseInt" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12381" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.parseint" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.parseInt(string, [radix])</div>

<div data-render-html="/parseInt"><p>以指定的基数转换字符串为整数。
如果基数是 <code>undefined</code> 或者 0，则基数默认是10，如果字符串是16进制，则基数为16。
<br>
<br>
<strong>注意:</strong> 这个方法与 <a href="https://es5.github.io/#E" target="_blank">ES5 implementation</a>
的 <code>parseInt</code> 一致</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">string</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
<li><span class="param-name">[radix]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>基数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(number)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的整数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >parseInt</span><span class="token punctuation" >(</span><span class="token string" >'08'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 8</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'6'</span><span class="token punctuation" >,</span> <span class="token string" >'08'</span><span class="token punctuation" >,</span> <span class="token string" >'10'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>parseInt<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [6, 8, 10]</span>
</code></pre>
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<div data-render-page="entry"><h2>repeat <a class="fa-link" href="./repeat" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12413" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.repeat" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.repeat([string&#x3D;&#x27;&#x27;], [n&#x3D;0])</div>

<div data-render-html="/repeat"><p>重复 N 次字符串</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要重复的字符串 </p>
</div></li>
<li><span class="param-name">[n&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>重复的次数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回重复的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >repeat</span><span class="token punctuation" >(</span><span class="token string" >'*'</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '***'</span>

_<span class="token punctuation" >.</span><span class="token function" >repeat</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abcabc'</span>

_<span class="token punctuation" >.</span><span class="token function" >repeat</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ''</span>
</code></pre>
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<div data-render-page="entry"><h2>replace <a class="fa-link" href="./replace" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12451" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.replace" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.replace([string&#x3D;&#x27;&#x27;], pattern)</div>

<div data-render-html="/replace"><p>替换字符串中匹配的内容为给定的内容
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/String/replace" target="_blank"><code>String#replace</code></a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>待替换的字符串 </p>
</div></li>
<li><span class="param-name">pattern</span> <span class="param-type">(RegExp|string)</span> <div data-render-html="/#synthetic"><p>要匹配的内容 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回替换完成的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >replace</span><span class="token punctuation" >(</span><span class="token string" >'Hi Fred'</span><span class="token punctuation" >,</span> <span class="token string" >'Fred'</span><span class="token punctuation" >,</span> <span class="token string" >'Barney'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Hi Barney'</span>
</code></pre>
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<div data-render-page="entry"><h2>snakeCase <a class="fa-link" href="./snakeCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12477" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.snakecase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.snakeCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/snakeCase"><p>转换字符串为 <a href="https://en.wikipedia.org/wiki/Snake_case" target="_blank">snake case</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >snakeCase</span><span class="token punctuation" >(</span><span class="token string" >'Foo Bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo_bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >snakeCase</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo_bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >snakeCase</span><span class="token punctuation" >(</span><span class="token string" >'--foo-bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foo_bar'</span>
</code></pre>
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<div data-render-page="entry"><h2>split <a class="fa-link" href="./split" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12498" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.split" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.split([string&#x3D;&#x27;&#x27;], [separator], [limit])</div>

<div data-render-html="/split"><p>以 <code>separator</code> 拆分字符串
<br>
<br>
<strong>注意:</strong> 这个方法基于 <a href="https://mdn.io/String/split" target="_blank"><code>String#split</code></a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要拆分的字符串 </p>
</div></li>
<li><span class="param-name">[separator]</span> <span class="param-type">(RegExp|string)</span> <div data-render-html="/#synthetic"><p>拆分的分隔符 </p>
</div></li>
<li><span class="param-name">[limit]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>限制的数量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回拆分部分的字符串的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >split</span><span class="token punctuation" >(</span><span class="token string" >'a-b-c'</span><span class="token punctuation" >,</span> <span class="token string" >'-'</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b']</span>
</code></pre>
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<div data-render-page="entry"><h2>startCase <a class="fa-link" href="./startCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12521" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.startcase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.startCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/startCase"><p>转换字符串为 <a href="https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage" target="_blank">start case</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >startCase</span><span class="token punctuation" >(</span><span class="token string" >'--foo-bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Foo Bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >startCase</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Foo Bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >startCase</span><span class="token punctuation" >(</span><span class="token string" >'__foo_bar__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Foo Bar'</span>
</code></pre>
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<div data-render-page="entry"><h2>startsWith <a class="fa-link" href="./startsWith" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12546" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.startswith" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.startsWith([string&#x3D;&#x27;&#x27;], [target], [position&#x3D;0])</div>

<div data-render-html="/startsWith"><p>检查字符串是否以 <code>target</code> 开头。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要检索的字符串 </p>
</div></li>
<li><span class="param-name">[target]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要检查的字符串 </p>
</div></li>
<li><span class="param-name">[position&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>检索的位置 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(boolean)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 如果符合条件返回<code>true</code>，否则返回 <code>false</code></p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >startsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'a'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

_<span class="token punctuation" >.</span><span class="token function" >startsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

_<span class="token punctuation" >.</span><span class="token function" >startsWith</span><span class="token punctuation" >(</span><span class="token string" >'abc'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>template <a class="fa-link" href="./template" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12648" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.template" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.template([string&#x3D;&#x27;&#x27;], [options])</div>

<div data-render-html="/template"><p>创建一个预编译模板方法，可以插入数据到模板中 &quot;interpolate&quot; 分隔符相应的位置。
HTML会在 &quot;escape&quot; 分隔符中转换为相应实体。
在 &quot;evaluate&quot; 分隔符中允许执行JavaScript代码。
在模板中可以自由访问变量。
如果设置了选项对象，则会优先覆盖 <code>_.templateSettings</code> 的值。
<br>
<br>
<strong>注意:</strong> 在开发过程中可以使用
<a href="http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl" target="_blank">sourceURLs</a>
便于调试。
<br>
<br>
了解更多预编译模板的信息查看
<a href="https://lodash.com/custom-builds" target="_blank">lodash的自定义构建文档</a>
<br>
<br>
了解更多 Chrome 沙箱扩展的信息查看
<a href="https://developer.chrome.com/extensions/sandboxingEval" target="_blank">Chrome的扩展文档</a></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>模板字符串 </p>
</div></li>
<li><span class="param-name">[options]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>选项对象 </p>
</div></li>
<li><span class="param-name">[options.escape]</span> <span class="param-type">(RegExp)</span> <div data-render-html="/#synthetic"><p>&quot;escape&quot; 分隔符 </p>
</div></li>
<li><span class="param-name">[options.evaluate]</span> <span class="param-type">(RegExp)</span> <div data-render-html="/#synthetic"><p>&quot;evaluate&quot; 分隔符 </p>
</div></li>
<li><span class="param-name">[options.imports]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>导入对象到模板中作为自由变量 </p>
</div></li>
<li><span class="param-name">[options.interpolate]</span> <span class="param-type">(RegExp)</span> <div data-render-html="/#synthetic"><p>&quot;interpolate&quot; 分隔符 </p>
</div></li>
<li><span class="param-name">[options.sourceURL]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>模板编译的来源URL </p>
</div></li>
<li><span class="param-name">[options.variable]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>数据对象的变量名 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回编译模板函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token comment" spellcheck="true">// 使用 "interpolate" 分隔符创建编译模板</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'hello &lt;%= user %>!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello fred!'</span>

<span class="token comment" spellcheck="true">// 使用 HTML "escape" 转义数据的值</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'&lt;b>&lt;%- value %>&lt;/b>'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'value'</span><span class="token punctuation" >:</span> <span class="token string" >'&lt;script>'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '&lt;b>&amp;lt;script&amp;gt;&lt;/b>'</span>

<span class="token comment" spellcheck="true">// 使用 "evaluate" 分隔符执行 JavaScript 和 生成HTML代码</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'&lt;% _.forEach(users, function(user) { %>&lt;li>&lt;%- user %>&lt;/li>&lt;% }); %>'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'users'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'barney'</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '&lt;li>fred&lt;/li>&lt;li>barney&lt;/li>'</span>

<span class="token comment" spellcheck="true">// 在 "evaluate" 分隔符中使用内部的 `print` 函数</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'&lt;% print("hello " + user); %>!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello barney!'</span>

<span class="token comment" spellcheck="true">// 使用 ES 分隔符代替默认的 "interpolate" 分隔符</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'hello ${ user }!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'pebbles'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello pebbles!'</span>

<span class="token comment" spellcheck="true">// 使用自定义的模板分隔符</span>
_<span class="token punctuation" >.</span>templateSettings<span class="token punctuation" >.</span>interpolate <span class="token operator" >=</span> <span class="token regex" >/{{([\s\S]+?)}}/g</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'hello {{ user }}!'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'mustache'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hello mustache!'</span>

<span class="token comment" spellcheck="true">// 使用反斜杠符号作为纯文本处理</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'&lt;%= "\\&lt;%- value %\\>" %>'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'value'</span><span class="token punctuation" >:</span> <span class="token string" >'ignored'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '&lt;%- value %>'</span>

<span class="token comment" spellcheck="true">// 使用 `imports` 选项导入 `jq` 作为 `jQuery` 的别名</span>
<span class="token keyword" >var</span> text <span class="token operator" >=</span> <span class="token string" >'&lt;% jq.each(users, function(user) { %>&lt;li>&lt;%- user %>&lt;/li>&lt;% }); %>'</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span>text<span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'imports'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'jq'</span><span class="token punctuation" >:</span> jQuery <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'users'</span><span class="token punctuation" >:</span> <span class="token punctuation" >[</span><span class="token string" >'fred'</span><span class="token punctuation" >,</span> <span class="token string" >'barney'</span><span class="token punctuation" >]</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '&lt;li>fred&lt;/li>&lt;li>barney&lt;/li>'</span>

<span class="token comment" spellcheck="true">// 使用 `sourceURL` 选项指定模板的来源URL</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'hello &lt;%= user %>!'</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'sourceURL'</span><span class="token punctuation" >:</span> <span class="token string" >'/basic/greeting.jst'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >compiled</span><span class="token punctuation" >(</span>data<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 在开发工具的 Sources 选项卡 或 Resources 面板中找到 "greeting.jst"</span>

<span class="token comment" spellcheck="true">// 使用 `variable` 选项确保在编译模板中不声明变量</span>
<span class="token keyword" >var</span> compiled <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span><span class="token string" >'hi &lt;%= data.user %>!'</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'variable'</span><span class="token punctuation" >:</span> <span class="token string" >'data'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
compiled<span class="token punctuation" >.</span>source<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => function(data) {</span>
<span class="token comment" spellcheck="true">//   var __t, __p = '';</span>
<span class="token comment" spellcheck="true">//   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';</span>
<span class="token comment" spellcheck="true">//   return __p;</span>
<span class="token comment" spellcheck="true">// }</span>

<span class="token comment" spellcheck="true">// 使用 `source` 特性内联编译模板</span>
<span class="token comment" spellcheck="true">// 便以查看行号、错误信息、堆栈</span>
fs<span class="token punctuation" >.</span><span class="token function" >writeFileSync</span><span class="token punctuation" >(</span>path<span class="token punctuation" >.</span><span class="token function" >join</span><span class="token punctuation" >(</span>cwd<span class="token punctuation" >,</span> <span class="token string" >'jst.js'</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span> <span class="token string" >'\
  var JST = {\
    "main": '</span> <span class="token operator" >+</span> _<span class="token punctuation" >.</span><span class="token function" >template</span><span class="token punctuation" >(</span>mainText<span class="token punctuation" >)</span><span class="token punctuation" >.</span>source <span class="token operator" >+</span> <span class="token string" >'\
  };\
'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>toLower <a class="fa-link" href="./toLower" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12773" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.tolower" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toLower([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/toLower"><p>转换整体的字符串为小写</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回小写的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toLower</span><span class="token punctuation" >(</span><span class="token string" >'--Foo-Bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '--foo-bar'</span>

_<span class="token punctuation" >.</span><span class="token function" >toLower</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'foobar'</span>

_<span class="token punctuation" >.</span><span class="token function" >toLower</span><span class="token punctuation" >(</span><span class="token string" >'__FOO_BAR__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '__foo_bar__'</span>
</code></pre>
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<div data-render-page="entry"><h2>toUpper <a class="fa-link" href="./toUpper" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12796" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.toupper" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toUpper([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/toUpper"><p>转换整体的字符串为大写</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回大写的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toUpper</span><span class="token punctuation" >(</span><span class="token string" >'--foo-bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '--FOO-BAR'</span>

_<span class="token punctuation" >.</span><span class="token function" >toUpper</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'FOOBAR'</span>

_<span class="token punctuation" >.</span><span class="token function" >toUpper</span><span class="token punctuation" >(</span><span class="token string" >'__foo_bar__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '__FOO_BAR__'</span>
</code></pre>
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<div data-render-page="entry"><h2>trim <a class="fa-link" href="./trim" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12821" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.trim" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.trim([string&#x3D;&#x27;&#x27;], [chars&#x3D;whitespace])</div>

<div data-render-html="/trim"><p>从字符串中移除前面和后面的空白 或 指定的字符。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符串 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;whitespace]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >trim</span><span class="token punctuation" >(</span><span class="token string" >'  abc  '</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc'</span>

_<span class="token punctuation" >.</span><span class="token function" >trim</span><span class="token punctuation" >(</span><span class="token string" >'-_-abc-_-'</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc'</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'  foo  '</span><span class="token punctuation" >,</span> <span class="token string" >'  bar  '</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>trim<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['foo', 'bar']</span>
</code></pre>
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<div data-render-page="entry"><h2>trimEnd <a class="fa-link" href="./trimEnd" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12857" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.trimend" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.trimEnd([string&#x3D;&#x27;&#x27;], [chars&#x3D;whitespace])</div>

<div data-render-html="/trimEnd"><p>移除字符串后面的空白 或 指定的字符。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符串 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;whitespace]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >trimEnd</span><span class="token punctuation" >(</span><span class="token string" >'  abc  '</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '  abc'</span>

_<span class="token punctuation" >.</span><span class="token function" >trimEnd</span><span class="token punctuation" >(</span><span class="token string" >'-_-abc-_-'</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '-_-abc'</span>
</code></pre>
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<div data-render-page="entry"><h2>trimStart <a class="fa-link" href="./trimStart" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12891" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.trimstart" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.trimStart([string&#x3D;&#x27;&#x27;], [chars&#x3D;whitespace])</div>

<div data-render-html="/trimStart"><p>移除字符串中前面的空白 或 指定的字符。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符串 </p>
</div></li>
<li><span class="param-name">[chars&#x3D;whitespace]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回处理后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >trimStart</span><span class="token punctuation" >(</span><span class="token string" >'  abc  '</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc  '</span>

_<span class="token punctuation" >.</span><span class="token function" >trimStart</span><span class="token punctuation" >(</span><span class="token string" >'-_-abc-_-'</span><span class="token punctuation" >,</span> <span class="token string" >'_-'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'abc-_-'</span>
</code></pre>
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<div data-render-page="entry"><h2>truncate <a class="fa-link" href="./truncate" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12942" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.truncate" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.truncate([string&#x3D;&#x27;&#x27;], [options])</div>

<div data-render-html="/truncate"><p>截断字符串，如果字符串超出了限定的最大值。
被截断的字符串后面会以 <code>omission</code> 代替，<code>omission</code> 默认是 &quot;...&quot;。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要截断的字符串 </p>
</div></li>
<li><span class="param-name">[options]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>选项对象 </p>
</div></li>
<li><span class="param-name">[options.length&#x3D;30]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>允许的最大长度 </p>
</div></li>
<li><span class="param-name">[options.omission&#x3D;&#x27;...&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>超出后的代替字符 </p>
</div></li>
<li><span class="param-name">[options.separator]</span> <span class="param-type">(RegExp|string)</span> <div data-render-html="/#synthetic"><p>截断点 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回截断后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >truncate</span><span class="token punctuation" >(</span><span class="token string" >'hi-diddly-ho there, neighborino'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi-diddly-ho there, neighbo...'</span>

_<span class="token punctuation" >.</span><span class="token function" >truncate</span><span class="token punctuation" >(</span><span class="token string" >'hi-diddly-ho there, neighborino'</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span>
  <span class="token string" >'length'</span><span class="token punctuation" >:</span> <span class="token number" >24</span><span class="token punctuation" >,</span>
  <span class="token string" >'separator'</span><span class="token punctuation" >:</span> <span class="token string" >' '</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi-diddly-ho there,...'</span>

_<span class="token punctuation" >.</span><span class="token function" >truncate</span><span class="token punctuation" >(</span><span class="token string" >'hi-diddly-ho there, neighborino'</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span>
  <span class="token string" >'length'</span><span class="token punctuation" >:</span> <span class="token number" >24</span><span class="token punctuation" >,</span>
  <span class="token string" >'separator'</span><span class="token punctuation" >:</span> <span class="token regex" >/,? +/</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi-diddly-ho there...'</span>

_<span class="token punctuation" >.</span><span class="token function" >truncate</span><span class="token punctuation" >(</span><span class="token string" >'hi-diddly-ho there, neighborino'</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span>
  <span class="token string" >'omission'</span><span class="token punctuation" >:</span> <span class="token string" >' [...]'</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'hi-diddly-ho there, neig [...]'</span>
</code></pre>
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<div data-render-page="entry"><h2>unescape <a class="fa-link" href="./unescape" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13015" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.unescape" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.unescape([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/unescape"><p>反向版 <code>_.escape</code>。
这个方法转换 HTML 实体
<code>&amp;amp;</code>, <code>&amp;lt;</code>, <code>&amp;gt;</code>, <code>&amp;quot;</code>, <code>&amp;#39;</code>, 以及 <code>&amp;#96;</code> 为对应的字符。
<br>
<br>
<strong>注意:</strong> 不会转换其他的 HTML 实体，需要转换可以使用类似 <a href="https://mths.be/he" target="_blank"><em>he</em></a> 的第三方库。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >unescape</span><span class="token punctuation" >(</span><span class="token string" >'fred, barney, &amp;amp; pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'fred, barney, &amp; pebbles'</span>
</code></pre>
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<div data-render-page="entry"><h2>upperCase <a class="fa-link" href="./upperCase" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13041" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.uppercase" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.upperCase([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/upperCase"><p>转换字符串为空格分割的大写单词</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回大写单词</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >upperCase</span><span class="token punctuation" >(</span><span class="token string" >'--foo-bar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'FOO BAR'</span>

_<span class="token punctuation" >.</span><span class="token function" >upperCase</span><span class="token punctuation" >(</span><span class="token string" >'fooBar'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'FOO BAR'</span>

_<span class="token punctuation" >.</span><span class="token function" >upperCase</span><span class="token punctuation" >(</span><span class="token string" >'__foo_bar__'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'FOO BAR'</span>
</code></pre>
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<div data-render-page="entry"><h2>upperFirst <a class="fa-link" href="./upperFirst" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L12268" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.upperfirst" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.upperFirst([string&#x3D;&#x27;&#x27;])</div>

<div data-render-html="/upperFirst"><p>转换首字母为大写。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要转换的字符串 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回转换后的字符串</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >upperFirst</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'Fred'</span>

_<span class="token punctuation" >.</span><span class="token function" >upperFirst</span><span class="token punctuation" >(</span><span class="token string" >'FRED'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'FRED'</span>
</code></pre>
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<div data-render-page="entry"><h2>words <a class="fa-link" href="./words" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13063" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.words" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.words([string&#x3D;&#x27;&#x27;], [pattern])</div>

<div data-render-html="/words"><p>拆分字符串中的词为数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[string&#x3D;&#x27;&#x27;]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要处理的字符串 </p>
</div></li>
<li><span class="param-name">[pattern]</span> <span class="param-type">(RegExp|string)</span> <div data-render-html="/#synthetic"><p>匹配模式 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 然后拆分后的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >words</span><span class="token punctuation" >(</span><span class="token string" >'fred, barney, &amp; pebbles'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['fred', 'barney', 'pebbles']</span>

_<span class="token punctuation" >.</span><span class="token function" >words</span><span class="token punctuation" >(</span><span class="token string" >'fred, barney, &amp; pebbles'</span><span class="token punctuation" >,</span> <span class="token regex" >/[^, ]+/g</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['fred', 'barney', '&amp;', 'pebbles']</span>
</code></pre>
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<div data-render-page="entry"><h2>attempt <a class="fa-link" href="./attempt" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13095" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.attempt" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.attempt(func)</div>

<div data-render-html="/attempt"><p>尝试调用函数，返回结果 或者 错误对象。
任何附加的参数都会在调用时传给函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">func</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>要调用的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回函数结果或者错误对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token comment" spellcheck="true">// 避免因为错误的选择器而抛出</span>
<span class="token keyword" >var</span> elements <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >attempt</span><span class="token punctuation" >(</span><span class="token keyword" >function</span><span class="token punctuation" >(</span>selector<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> document<span class="token punctuation" >.</span><span class="token function" >querySelectorAll</span><span class="token punctuation" >(</span>selector<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token string" >'>_>'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token keyword" >if</span> <span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >isError</span><span class="token punctuation" >(</span>elements<span class="token punctuation" >)</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  elements <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token punctuation" >]</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>
</code></pre>
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<div data-render-page="entry"><h2>bindAll <a class="fa-link" href="./bindAll" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13128" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.bindall" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.bindAll(object, methodNames)</div>

<div data-render-html="/bindAll"><p>绑定对象的方法到对象本身，覆盖已存在的方法。
<br>
<br>
<strong>注意:</strong> 这个方法不会设置 &quot;length&quot; 属性到约束的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要绑定的对象 </p>
</div></li>
<li><span class="param-name">methodNames</span> <span class="param-type">(...(string|string[])</span> <div data-render-html="/#synthetic"><p>要绑定的方法名 单独指定或指定在数组中。 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> view <span class="token operator" >=</span> <span class="token punctuation" >{</span>
  <span class="token string" >'label'</span><span class="token punctuation" >:</span> <span class="token string" >'docs'</span><span class="token punctuation" >,</span>
  <span class="token string" >'onClick'</span><span class="token punctuation" >:</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span><span class="token string" >'clicked '</span> <span class="token operator" >+</span> <span class="token keyword" >this</span><span class="token punctuation" >.</span>label<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >bindAll</span><span class="token punctuation" >(</span>view<span class="token punctuation" >,</span> <span class="token string" >'onClick'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >jQuery</span><span class="token punctuation" >(</span>element<span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >on</span><span class="token punctuation" >(</span><span class="token string" >'click'</span><span class="token punctuation" >,</span> view<span class="token punctuation" >.</span>onClick<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => logs 'clicked docs' when clicked</span>
</code></pre>
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<div data-render-page="entry"><h2>cond <a class="fa-link" href="./cond" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13161" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.cond" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.cond(pairs)</div>

<div data-render-html="/cond"><p>创建一个函数。
这个函数会遍历 <code>pairs</code>，并执行最先返回真值对应的函数，并绑定 <code>this</code> 及传入创建函数的参数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">pairs</span> <span class="param-type">(Array)</span> <div data-render-html="/#synthetic"><p>判断函数对 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >cond</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span>
  <span class="token punctuation" >[</span>_<span class="token punctuation" >.</span><span class="token function" >matches</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span>           _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'matches A'</span><span class="token punctuation" >)</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >[</span>_<span class="token punctuation" >.</span><span class="token function" >conforms</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span>isNumber <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'matches B'</span><span class="token punctuation" >)</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >[</span>_<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token keyword" >true</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span>                _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'no match'</span><span class="token punctuation" >)</span><span class="token punctuation" >]</span>
<span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出：'matches A'</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出：'matches B'</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token string" >'1'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token string" >'2'</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 输出：'no match'</span>
</code></pre>
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<div data-render-page="entry"><h2>conforms <a class="fa-link" href="./conforms" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13203" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.conforms" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.conforms(source)</div>

<div data-render-html="/conforms"><p>创建一个函数。
这个函数会调用 <code>source</code> 的属性名对应的 <code>predicate</code> 与传入对象相对应属性名的值进行 <code>predicate</code> 处理。
如果都符合返回 <code>true</code>，否则返回 <code>false</code></p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">source</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>包含 predicates 属性值的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >conforms</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >partial</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>gt<span class="token punctuation" >,</span> _<span class="token punctuation" >,</span> <span class="token number" >38</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'user': 'fred', 'age': 40 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>constant <a class="fa-link" href="./constant" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13223" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.constant" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.constant(value)</div>

<div data-render-html="/constant"><p>创建一个返回 <code>value</code> 的函数</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要返回的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token keyword" >var</span> getter <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >getter</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token operator" >===</span> object<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>flow <a class="fa-link" href="./flow" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13249" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flow" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flow([funcs])</div>

<div data-render-html="/flow"><p>创建一个函数。
返回的结果是调用提供函数的结果，<code>this</code> 会绑定到创建函数。
每一个连续调用，传入的参数都是前一个函数返回的结果。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[funcs]</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>要调用的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> addSquare <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >flow</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>add<span class="token punctuation" >,</span> square<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >addSquare</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 9</span>
</code></pre>
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<div data-render-page="entry"><h2>flowRight <a class="fa-link" href="./flowRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13269" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.flowright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.flowRight([funcs])</div>

<div data-render-html="/flowRight"><p>这个方法类似 <code>_.flow</code>，除了它调用函数的顺序是从右往左的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[funcs]</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>要调用的函数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >square</span><span class="token punctuation" >(</span>n<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> n <span class="token operator" >*</span> n<span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

<span class="token keyword" >var</span> addSquare <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >flowRight</span><span class="token punctuation" >(</span>square<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>add<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >addSquare</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 9</span>
</code></pre>
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<div data-render-page="entry"><h2>identity <a class="fa-link" href="./identity" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13286" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.identity" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.identity(value)</div>

<div data-render-html="/identity"><p>这个方法返回首个提供的参数</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>任何值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(*)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 value</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >identity</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span> <span class="token operator" >===</span> object<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>iteratee <a class="fa-link" href="./iteratee" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13319" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.iteratee" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.iteratee([func&#x3D;_.identity])</div>

<div data-render-html="/iteratee"><p>创建一个调用 <code>func</code> 的函数。
如果 <code>func</code> 是一个属性名，传入包含这个属性名的对象，回调返回对应属性名的值。
如果 <code>func</code> 是一个对象，传入的元素有相同的对象属性，回调返回 <code>true</code>。
其他情况返回 <code>false</code>。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[func&#x3D;_.identity]</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>转换成 callback 的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 callback.</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 创建一个自定义 iteratee</span>
_<span class="token punctuation" >.</span>iteratee <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >wrap</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>iteratee<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>callback<span class="token punctuation" >,</span> func<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >var</span> p <span class="token operator" >=</span> <span class="token regex" >/^(\S+)\s*([&lt;>])\s*(\S+)$/</span><span class="token punctuation" >.</span><span class="token function" >exec</span><span class="token punctuation" >(</span>func<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token keyword" >return</span> <span class="token operator" >!</span>p <span class="token operator" >?</span> <span class="token function" >callback</span><span class="token punctuation" >(</span>func<span class="token punctuation" >)</span> <span class="token punctuation" >:</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> <span class="token punctuation" >(</span>p<span class="token punctuation" >[</span><span class="token number" >2</span><span class="token punctuation" >]</span> <span class="token operator" >==</span> <span class="token string" >'>'</span> <span class="token operator" >?</span> object<span class="token punctuation" >[</span>p<span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span> <span class="token operator" >></span> p<span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >]</span> <span class="token punctuation" >:</span> object<span class="token punctuation" >[</span>p<span class="token punctuation" >[</span><span class="token number" >1</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span> <span class="token operator" >&lt;</span> p<span class="token punctuation" >[</span><span class="token number" >3</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> <span class="token string" >'age > 36'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'user': 'fred', 'age': 40 }]</span>
</code></pre>
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<div data-render-page="entry"><h2>matches <a class="fa-link" href="./matches" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13344" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.matches" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.matches(source)</div>

<div data-render-html="/matches"><p>创建一个深比较的方法来比较给定的对象和 <code>source</code> 对象。
如果给定的对象拥有相同的属性值返回 <code>true</code>，否则返回 <code>false</code>
<br>
<br>
<strong>注意:</strong> 这个方法支持以 <code>_.isEqual</code> 的方式比较相同的值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">source</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要匹配的源对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span><span class="token punctuation" >,</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >36</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >true</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span><span class="token punctuation" >,</span>   <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >matches</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'age'</span><span class="token punctuation" >:</span> <span class="token number" >40</span><span class="token punctuation" >,</span> <span class="token string" >'active'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [{ 'user': 'fred', 'age': 40, 'active': false }]</span>
</code></pre>
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<div data-render-page="entry"><h2>matchesProperty <a class="fa-link" href="./matchesProperty" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13370" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.matchesproperty" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.matchesProperty(path, srcValue)</div>

<div data-render-html="/matchesProperty"><p>创建一个深比较的方法来比较给定对象的 <code>path</code> 的值是否是 <code>srcValue</code>。
如果是返回 <code>true</code>，否则返回 <code>false</code>
<br>
<br>
<strong>注意:</strong> 这个方法支持以 <code>_.isEqual</code> 的方式比较相同的值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>给定对象的属性路径名 </p>
</div></li>
<li><span class="param-name">srcValue</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要匹配的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> users <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'barney'</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >find</span><span class="token punctuation" >(</span>users<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >matchesProperty</span><span class="token punctuation" >(</span><span class="token string" >'user'</span><span class="token punctuation" >,</span> <span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => { 'user': 'fred' }</span>
</code></pre>
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<div data-render-page="entry"><h2>method <a class="fa-link" href="./method" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13397" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.method" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.method(path, [args])</div>

<div data-render-html="/method"><p>创建一个调用给定对象 <code>path</code> 上的函数。
任何附加的参数都会传入这个调用函数中。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>调用函数所在对象的路径 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>传递给调用函数的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token number" >2</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >method</span><span class="token punctuation" >(</span><span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >invokeMap</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >method</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span> <span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>methodOf <a class="fa-link" href="./methodOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13425" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.methodof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.methodOf(object, [args])</div>

<div data-render-html="/methodOf"><p>反向版 <code>_.method</code>。
这个创建一个函数调用给定 <code>object</code> 的 <code>path</code> 上的方法，
任何附加的参数都会传入这个调用函数中。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
<li><span class="param-name">[args]</span> <span class="param-type">(...*)</span> <div data-render-html="/#synthetic"><p>传递给调用函数的参数 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >times</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span>constant<span class="token punctuation" >)</span><span class="token punctuation" >,</span>
    object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> array<span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> array<span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> array <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a[2]'</span><span class="token punctuation" >,</span> <span class="token string" >'c[0]'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >methodOf</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'2'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'0'</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >methodOf</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 0]</span>
</code></pre>
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<div data-render-page="entry"><h2>mixin <a class="fa-link" href="./mixin" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13464" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.mixin" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.mixin([object&#x3D;lodash], source, [options])</div>

<div data-render-html="/mixin"><p>添加来源对象自身的所有可枚举函数属性到目标对象。
如果 <code>object</code> 是个函数，那么函数方法将被添加到原型链上。
<br>
<br>
<strong>注意:</strong> 使用 <code>_.runInContext</code> 来创建原始的 <code>lodash</code> 函数来避免修改造成的冲突。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[object&#x3D;lodash]</span> <span class="param-type">(Function|Object)</span> <div data-render-html="/#synthetic"><p>目标对象 </p>
</div></li>
<li><span class="param-name">source</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>来源对象 </p>
</div></li>
<li><span class="param-name">[options]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>选项对象 </p>
</div></li>
<li><span class="param-name">[options.chain&#x3D;true]</span> <span class="param-type">(boolean)</span> <div data-render-html="/#synthetic"><p>是否开启链式操作 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function|Object)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >function</span> <span class="token function" >vowels</span><span class="token punctuation" >(</span>string<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
  <span class="token keyword" >return</span> _<span class="token punctuation" >.</span><span class="token function" >filter</span><span class="token punctuation" >(</span>string<span class="token punctuation" >,</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span>v<span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> <span class="token regex" >/[aeiou]/i</span><span class="token punctuation" >.</span><span class="token function" >test</span><span class="token punctuation" >(</span>v<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token punctuation" >}</span>

_<span class="token punctuation" >.</span><span class="token function" >mixin</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'vowels'</span><span class="token punctuation" >:</span> vowels <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
_<span class="token punctuation" >.</span><span class="token function" >vowels</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['e']</span>

<span class="token function" >_</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >vowels</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >value</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['e']</span>

_<span class="token punctuation" >.</span><span class="token function" >mixin</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'vowels'</span><span class="token punctuation" >:</span> vowels <span class="token punctuation" >}</span><span class="token punctuation" >,</span> <span class="token punctuation" >{</span> <span class="token string" >'chain'</span><span class="token punctuation" >:</span> <span class="token keyword" >false</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token function" >_</span><span class="token punctuation" >(</span><span class="token string" >'fred'</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span><span class="token function" >vowels</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['e']</span>
</code></pre>
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<div data-render-page="entry"><h2>noConflict <a class="fa-link" href="./noConflict" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13510" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.noconflict" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.noConflict()</div>

<div data-render-html="/noConflict"><p>释放 <code>_</code> 为原来的值，并返回一个 <code>lodash</code> 的引用</p>
</div>

<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回 <code>lodash</code> 函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> lodash <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >noConflict</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>noop <a class="fa-link" href="./noop" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13530" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.noop" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.noop()</div>

<div data-render-html="/noop"><p>无论传递什么参数，都返回 <code>undefined</code>。</p>
</div>

<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'user'</span><span class="token punctuation" >:</span> <span class="token string" >'fred'</span> <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >noop</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span> <span class="token operator" >===</span> undefined<span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
</code></pre>
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<div data-render-page="entry"><h2>nthArg <a class="fa-link" href="./nthArg" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13549" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.ntharg" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.nthArg([n&#x3D;0])</div>

<div data-render-html="/nthArg"><p>创建一个返回第 N 个参数的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[n&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要返回参数的索引 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >nthArg</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'b'</span>
</code></pre>
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<div data-render-page="entry"><h2>over <a class="fa-link" href="./over" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13571" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.over" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.over(iteratees)</div>

<div data-render-html="/over"><p>创建一个传入提供的参数的函数并调用 <code>iteratees</code> 返回结果的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">iteratees</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>要调用的 iteratees </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >over</span><span class="token punctuation" >(</span>Math<span class="token punctuation" >.</span>max<span class="token punctuation" >,</span> Math<span class="token punctuation" >.</span>min<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >,</span> <span class="token number" >3</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, 1]</span>
</code></pre>
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<div data-render-page="entry"><h2>overEvery <a class="fa-link" href="./overEvery" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13594" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.overevery" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.overEvery(predicates)</div>

<div data-render-html="/overEvery"><p>创建一个传入提供的参数的函数并调用 <code>iteratees</code> 判断是否 全部 都为真值的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">predicates</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>要调用的 predicates </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >overEvery</span><span class="token punctuation" >(</span>Boolean<span class="token punctuation" >,</span> isFinite<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token string" >'1'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>overSome <a class="fa-link" href="./overSome" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13617" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.oversome" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.overSome(predicates)</div>

<div data-render-html="/overSome"><p>创建一个传入提供的参数的函数并调用 <code>iteratees</code> 判断是否 存在 有真值的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">predicates</span> <span class="param-type">(...(Function|Function[])</span> <div data-render-html="/#synthetic"><p>要调用的 predicates </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> func <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >overSome</span><span class="token punctuation" >(</span>Boolean<span class="token punctuation" >,</span> isFinite<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token string" >'1'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token keyword" >null</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token function" >func</span><span class="token punctuation" >(</span><span class="token number" >NaN</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>property <a class="fa-link" href="./property" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13640" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.property" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.property(path)</div>

<div data-render-html="/property"><p>创建一个返回给定对象的 <code>path</code> 的值的函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">path</span> <span class="param-type">(Array|string)</span> <div data-render-html="/#synthetic"><p>要得到值的属性路径 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> objects <span class="token operator" >=</span> <span class="token punctuation" >[</span>
  <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >2</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span><span class="token punctuation" >,</span>
  <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> <span class="token punctuation" >{</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> <span class="token number" >1</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span> <span class="token punctuation" >}</span>
<span class="token punctuation" >]</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >property</span><span class="token punctuation" >(</span><span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span><span class="token function" >sortBy</span><span class="token punctuation" >(</span>objects<span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >property</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >,</span> <span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2]</span>
</code></pre>
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<div data-render-page="entry"><h2>propertyOf <a class="fa-link" href="./propertyOf" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13664" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.propertyof" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.propertyOf(object)</div>

<div data-render-html="/propertyOf"><p>反向版  <code>_.property</code>。
这个方法创建的函数返回给定 path 在对象上的值。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">object</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>要检索的对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的函数</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js"><span class="token keyword" >var</span> array <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >2</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
    object <span class="token operator" >=</span> <span class="token punctuation" >{</span> <span class="token string" >'a'</span><span class="token punctuation" >:</span> array<span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >:</span> array<span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >:</span> array <span class="token punctuation" >}</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token string" >'a[2]'</span><span class="token punctuation" >,</span> <span class="token string" >'c[0]'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >propertyOf</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >map</span><span class="token punctuation" >(</span><span class="token punctuation" >[</span><span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'2'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> <span class="token punctuation" >[</span><span class="token string" >'c'</span><span class="token punctuation" >,</span> <span class="token string" >'0'</span><span class="token punctuation" >]</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >propertyOf</span><span class="token punctuation" >(</span>object<span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [2, 0]</span>
</code></pre>
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<div data-render-page="entry"><h2>range <a class="fa-link" href="./range" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13708" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.range" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.range([start&#x3D;0], end, [step&#x3D;1])</div>

<div data-render-html="/range"><p>创建一个包含从 <code>start</code> 到 <code>end</code>，但不包含 <code>end</code> 本身范围数字的数组。
如果 <code>start</code> 是负数，而 <code>end</code> 或 <code>step</code> 没有指定，那么 <code>step</code> 从 <code>-1</code> 为开始。
如果 <code>end</code> 没有指定，<code>start</code> 设置为 <code>0</code>。
如果 <code>end</code> 小于 <code>start</code>，会创建一个空数组，除非指定了 <code>step</code>。
<br>
<br>
<strong>注意:</strong> JavaScript 遵循 IEEE-754 标准处理无法预料的浮点数结果。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[start&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>开始的范围 </p>
</div></li>
<li><span class="param-name">end</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>结束的范围 </p>
</div></li>
<li><span class="param-name">[step&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>范围的增量 或者 减量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回范围内数字组成的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [0, 1, 2, 3]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token operator" >-</span><span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [0, -1, -2, -3]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 2, 3, 4]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >20</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [0, 5, 10, 15]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [0, -1, -2, -3]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >range</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>rangeRight <a class="fa-link" href="./rangeRight" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13744" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.rangeright" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.rangeRight([start&#x3D;0], end, [step&#x3D;1])</div>

<div data-render-html="/rangeRight"><p>这个方法类似 <code>_.range</code>，
除了它是降序生成值的。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[start&#x3D;0]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>开始的范围 </p>
</div></li>
<li><span class="param-name">end</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>结束的范围 </p>
</div></li>
<li><span class="param-name">[step&#x3D;1]</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>范围的增量 或者 减量 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回范围内数字组成的新数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [3, 2, 1, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token operator" >-</span><span class="token number" >4</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [-3, -2, -1, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [4, 3, 2, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token number" >20</span><span class="token punctuation" >,</span> <span class="token number" >5</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [15, 10, 5, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token operator" >-</span><span class="token number" >1</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [-3, -2, -1, 0]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >1</span><span class="token punctuation" >,</span> <span class="token number" >4</span><span class="token punctuation" >,</span> <span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [1, 1, 1]</span>

_<span class="token punctuation" >.</span><span class="token function" >rangeRight</span><span class="token punctuation" >(</span><span class="token number" >0</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => []</span>
</code></pre>
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<div data-render-page="entry"><h2>runInContext <a class="fa-link" href="./runInContext" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L1300" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.runincontext" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.runInContext([context&#x3D;root])</div>

<div data-render-html="/runInContext"><p>创建一个给定上下文对象的原始的 <code>lodash</code> 函数。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[context&#x3D;root]</span> <span class="param-type">(Object)</span> <div data-render-html="/#synthetic"><p>上下文对象 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Function)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回新的 <code>lodash</code> 对象</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >mixin</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'foo'</span><span class="token punctuation" >:</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'foo'</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token keyword" >var</span> lodash <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >runInContext</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
lodash<span class="token punctuation" >.</span><span class="token function" >mixin</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'bar'</span><span class="token punctuation" >:</span> lodash<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token string" >'bar'</span><span class="token punctuation" >)</span> <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

_<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>foo<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>
_<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span>_<span class="token punctuation" >.</span>bar<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>

lodash<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span>lodash<span class="token punctuation" >.</span>foo<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
lodash<span class="token punctuation" >.</span><span class="token function" >isFunction</span><span class="token punctuation" >(</span>lodash<span class="token punctuation" >.</span>bar<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => true</span>

<span class="token comment" spellcheck="true">// 使用 `context` 模拟 `Date#getTime` 调用 `_.now`</span>
<span class="token keyword" >var</span> mock <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >runInContext</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span>
  <span class="token string" >'Date'</span><span class="token punctuation" >:</span> <span class="token keyword" >function</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span> <span class="token punctuation" >{</span>
    <span class="token keyword" >return</span> <span class="token punctuation" >{</span> <span class="token string" >'getTime'</span><span class="token punctuation" >:</span> getTimeMock <span class="token punctuation" >}</span><span class="token punctuation" >;</span>
  <span class="token punctuation" >}</span>
<span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>

<span class="token comment" spellcheck="true">// 或者在 Node.js 中创建一个更高级的 `defer`</span>
<span class="token keyword" >var</span> defer <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >runInContext</span><span class="token punctuation" >(</span><span class="token punctuation" >{</span> <span class="token string" >'setTimeout'</span><span class="token punctuation" >:</span> setImmediate <span class="token punctuation" >}</span><span class="token punctuation" >)</span><span class="token punctuation" >.</span>defer<span class="token punctuation" >;</span>
</code></pre>
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<div data-render-page="entry"><h2>times <a class="fa-link" href="./times" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13764" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.times" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.times(n, [iteratee&#x3D;_.identity])</div>

<div data-render-html="/times"><p>调用 iteratee N 次，每次调用返回的结果存入到数组中。
iteratee 会传入1个参数：(index)。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">n</span> <span class="param-type">(number)</span> <div data-render-html="/#synthetic"><p>要调用  <code>iteratee</code> 的次数 </p>
</div></li>
<li><span class="param-name">[iteratee&#x3D;_.identity]</span> <span class="param-type">(Function)</span> <div data-render-html="/#synthetic"><p>这个函数会处理每一个元素 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回调用结果的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >times</span><span class="token punctuation" >(</span><span class="token number" >3</span><span class="token punctuation" >,</span> String<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['0', '1', '2']</span>

 _<span class="token punctuation" >.</span><span class="token function" >times</span><span class="token punctuation" >(</span><span class="token number" >4</span><span class="token punctuation" >,</span> _<span class="token punctuation" >.</span><span class="token function" >constant</span><span class="token punctuation" >(</span><span class="token keyword" >true</span><span class="token punctuation" >)</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => [true, true, true, true]</span>
</code></pre>
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<div data-render-page="entry"><h2>toPath <a class="fa-link" href="./toPath" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13807" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.topath" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.toPath(value)</div>

<div data-render-html="/toPath"><p>创建 <code>value</code> 为属性路径的数组</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">value</span> <span class="param-type">(*)</span> <div data-render-html="/#synthetic"><p>要转换的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(Array)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回包含属性路径的数组</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >toPath</span><span class="token punctuation" >(</span><span class="token string" >'a.b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c']</span>

_<span class="token punctuation" >.</span><span class="token function" >toPath</span><span class="token punctuation" >(</span><span class="token string" >'a[0].b.c'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', '0', 'b', 'c']</span>

<span class="token keyword" >var</span> path <span class="token operator" >=</span> <span class="token punctuation" >[</span><span class="token string" >'a'</span><span class="token punctuation" >,</span> <span class="token string" >'b'</span><span class="token punctuation" >,</span> <span class="token string" >'c'</span><span class="token punctuation" >]</span><span class="token punctuation" >,</span>
    newPath <span class="token operator" >=</span> _<span class="token punctuation" >.</span><span class="token function" >toPath</span><span class="token punctuation" >(</span>path<span class="token punctuation" >)</span><span class="token punctuation" >;</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>newPath<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => ['a', 'b', 'c']</span>

console<span class="token punctuation" >.</span><span class="token function" >log</span><span class="token punctuation" >(</span>path <span class="token operator" >===</span> newPath<span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => false</span>
</code></pre>
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<div data-render-page="entry"><h2>uniqueId <a class="fa-link" href="./uniqueId" title="Link to this entry.">&#xf0c1;</a> <a href="https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L13828" title="View in source." target="github">source</a> <a href="https://www.npmjs.com/package/lodash.uniqueid" title="See the npm package." target="npm">npm</a></h2>
<div class="signature">_.uniqueId([prefix])</div>

<div data-render-html="/uniqueId"><p>创建唯一ID。
如果提供了 <code>prefix</code>，会被添加到ID前缀上。</p>
</div>

<h3>参数</h3>
    <ol>
<li><span class="param-name">[prefix]</span> <span class="param-type">(string)</span> <div data-render-html="/#synthetic"><p>要添加到ID前缀的值 </p>
</div></li>
    </ol>
<h3>返回值 <span class="return-type">(string)</span></h3>
    <div class="returns"> <div data-render-html="/#synthetic"><p> 返回唯一ID</p>
</div></div>
<h3>示例</h3>
    <div data-render-html="/#synthetic"><pre><code class="lang-js">_<span class="token punctuation" >.</span><span class="token function" >uniqueId</span><span class="token punctuation" >(</span><span class="token string" >'contact_'</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => 'contact_104'</span>

_<span class="token punctuation" >.</span><span class="token function" >uniqueId</span><span class="token punctuation" >(</span><span class="token punctuation" >)</span><span class="token punctuation" >;</span>
<span class="token comment" spellcheck="true">// => '105'</span>
</code></pre>
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