dg.html

<!DOCTYPE html>
<html lang="en" ng-app="app">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>

<body ng-controller="Ctrl">
    <div ng-repeat="item in list">
        <button ng-click="item.status=!item.status">获取焦点</button>
        <input type="text" watch ng-watch="item.status">
    </div>
</body>
<script src="lib/angular.js"></script>
<!--<script src="template/ngWatch.dirctive.js"></script>-->
<script>
    var app = angular.module('app',[]).controller('Ctrl',function($scope){
        $scope.item=false;
        $scope.list = [
            {name:"test",status:false},
            {name:"test1",status:false},
            {name:"test2",status:false},
        ]
        $scope.is = function(){
            $scope.item=!$scope.item;
        }
    })
    app.directive('watch',function(){
        return {
            scope:{
                ngWatch:"="
            },
            link:function(scope,element,attrs){
                console.log(element)
                scope.$watch('ngWatch',function(a,b){
                    if(scope.ngWatch){
                        element[0].focus();
                    }
                })
            }
        }
    })
</script>
</html>