element ui 在messageBox里的html中绑定事件

<template>
  <div class="about">
    <h1>This is an about page</h1>
    <el-button type="primary" size="default" @click="onTest">测试</el-button>
    <div>
     
    </div>
  </div>
</template>
<script>
  export default {
  name: 'about',
  mounted() {
    window.myFunction = this.myFunction;
  },
  methods: {
    onTest(){

        this.$confirm(`<div>此操作将永久删除该文件, 是否继续</div>?<button onclick='myFunction()'>查询</button>`, '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          dangerouslyUseHTMLString: true,
          type: 'warning'
        }).then(() => {
          this.$message({
            type: 'success',
            message: '删除成功!'
          });
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
    },
    myFunction(){
      alert('你好啊')
    }
  },
}
</script>

在绑定事件后需要在window对象中添加才可以触发