<!-- 父組件 -->
<template>
 <div class="audioCate">
 <child :show.sync="showModel" @closeModel="handleCloseModel"></child>
 </div>
</template>
<script>
 import child from './child'
 export default{
 components: {
  child,
 }
 data() {
  return {
  showModel: false
  }
 },
 methods: {
  handleCloseModel() {
  this.showModel = false;
  }
 }
 }
</script>
<!-- 子組件 -->
<template>
 <div class="cate" @click="handleClick">
 <div></div>
 </div>
</template>
<script>
 export default{
 props: {
  show: Boolean,
 },
 data() {
  return {
  showModel: false
  }
 },
 methods: {
  handleClick() {
  /* 直接更新父組件中的showModel值 */
  this.$emit('update:show', false);
  /* 或者調(diào)用父組件中的方法對(duì)showModel進(jìn)行更改 */
  /* this.$emit('closeModel'); */
  }
 }
 }
</script>

<script>
 export default{
 data() {
  return {
  item: {
   title: '222'
  },
  options: [11, 22],
  list: [
   {
   title: '2222'
   }
  ]
  }
 },
 created() {
  /* 對(duì)于對(duì)象，第一個(gè)為要修改的對(duì)象，第二個(gè)參數(shù)為對(duì)象的鍵，第三個(gè)為要修改的鍵對(duì)應(yīng)的值 */
  this.$set(this.item, 'title', '2200');
  /* 對(duì)于對(duì)象，第一個(gè)為要修改的數(shù)組，第二個(gè)參數(shù)為數(shù)組索引，第三個(gè)為要修改的索引對(duì)應(yīng)的值 */
  this.$set(this.options, 0, 33);
  /* 對(duì)于數(shù)組里包含對(duì)象，可以利用循環(huán)對(duì)其進(jìn)行修改 */
  this.list.forEach(item => {
  this.$set(item, '_disableExpand', true);
  });
  /* 對(duì)于數(shù)組里包含對(duì)象，也可以利用Object.assign對(duì)其進(jìn)行修改 */
  this.list[0] = Object.assign({}, this.list[0], { num: 10 });
  this.$set(this.list, 0, this.list[0]);
 },
 }
</script>

this.options[0] = 100;
this.$forceUpdate();