给弹框添加关闭按钮

效果如下：

代码:

父组件

<template>
  <el-container class="container">
    <h1>这是父组件</h1>
    <HelloWorld v-if="detailVisible" msg="Welcome to Your Vue.js App" @detailClose="detailClose"/>
  </el-container>
</template>

<script>
import HelloWorld from '@/components/HelloWorld.vue'

export default {
  name: 'HomeView',
  components: {
    HelloWorld
  },
  data() {
    return {
      detailVisible: true
    }
  },
  methods:{
    detailClose(){
      this.detailVisible = false
    }
  }
}
</script>
<style scoped>
.container{
  width: 100%;
  height: 800px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #CAE1FF;
}
</style>

子组件

<template>
  <div class="hello">
    <div class="panel">
      <div class="panel-header">
        <span>标题</span>
        <i class="el-icon-circle-close"  @click="close"></i>
      </div>
      <h1>{{ msg }}</h1>
      这是子组件
    </div>
  </div>
</template>

<script>
let that
export default {
  name: 'HelloWorld',
  props: {
    msg: String
  },
  created(){
    that = this
  },
  methods:{
    close(){
      this.$emit('detailClose');
    }
  }
}
</script>

<style scoped lang="less">
.hello{
  z-index: 999;
  width: 320px;
  height: 600px;
  padding: 10px;
  position: fixed;
  top: 100px;
  right: 20px;
  background-color: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  border-radius: 8px;
  box-shadow: 0px 0px 20px 5px rgba(0, 0, 0, 0.12);
  .panel{
    width: 100%;
    height: 200px;
    .panel-header{
      //width: 100%;
      height: 40px;
      line-height: 30px;
      //font-weight: bolder;
      background-color: #647DFA;
      text-indent: 10px;
      padding-left: 8px;
      padding-right: 8px;
      border-radius: 4px;
      font-family: MiSans-Medium;
      font-size: 16px;
      color: rgba(255,255,255,0.85);
      display: flex;
      align-items: center;
      .el-icon-circle-close{
        position: absolute;
        top: 18px;
        right: 14px;
        z-index: 1;
        width: 25px;
        height: 25px;
        cursor: pointer;
        color: rgba(255,255,255,0.45)
      }
      .el-icon-circle-close:hover{
        position: absolute;
        top: 18px;
        right: 14px;
        z-index: 1;
        width: 25px;
        height: 25px;
        cursor: pointer;
        color: rgba(255,255,255,1)
      }
    }
  }
}
</style>