15 - 切换器

[ehxie]

hook 的使用

<script setup lang='ts'>
import {ref} from 'vue'
/**
 * Implement a composable function that toggles the state
 * Make the function work correctly
*/
function useToggle(state: boolean) {
  const _state = ref(state)

  const toggle = () => {
    _state.value = !_state.value
  }

  return [_state, toggle]
}

const [state, toggle] = useToggle(false)

</script>

<template>
  <p>State: {{ state ? 'ON' : 'OFF' }}</p>
  <p @click="toggle">
    Toggle state
  </p>
</template>