:modal-append-to-body=“false” :append-to-body=“true”
嵌套的 Dialog 必须指定该属性并赋值为 true

<template><el-button type="text" @click="outerVisible = true">点击打开外层 Dialog</el-button><el-dialog title="外层 Dialog" :visible.sync="outerVisible"><el-dialogwidth="30%"title="内层 Dialog":visible.sync="innerVisible":modal-append-to-body="false" :append-to-body="true" ></el-dialog><div slot="footer" class="dialog-footer"><el-button @click="outerVisible = false">取 消</el-button><el-button type="primary" @click="innerVisible = true">打开内层 Dialog</el-button></div></el-dialog>
</template><script>export default {data() {return {outerVisible: false,innerVisible: false};}}
</script>