vue.js+实现全选功能

<template>
  <div>
    <!-- 主复选框 -->
    <input type="checkbox" v-model="selectAll" @change="toggleSelectAll">
    Select All

    <!-- 子复选框列表 -->
    <ul>
      <li v-for="(item, index) in items" :key="index">
        <input type="checkbox" v-model="item.selected">
        {{ item.name }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [
        { name: 'Item 1', selected: false },
        { name: 'Item 2', selected: false },
        { name: 'Item 3', selected: false }
      ],
      selectAll: false
    };
  },
  methods: {
    toggleSelectAll(event) {
      const value = event.target.checked;
      this.items.forEach(item => {
        item.selected = value;
      });
    }
  },
  watch: {
    items: {
      handler(newVal) {
        this.selectAll = newVal.every(item => item.selected);
      },
      deep: true
    }
  }
};
</script>