需求：用户点击按钮，弹出框出现，弹出框里有确认&取消按钮，点击确认&取消&其他区域，弹出框消失。

image.png

此时你会发现，设置完visible，点击其他区域，弹出框不会消失！

项目是基于vue3+element-plus+TS，通过设置ref去解决，分两种情况：

一般情况

<template>
  <el-popover trigger="click" ref="popoverRef" placement="top">
    <p>Are you sure to delete this?</p>
    <div style="text-align: right; margin: 0">
      <el-button size="small" text @click="handleClose()">cancel</el-button>
      <el-button size="small" type="primary" @click="handleClose()">confirm</el-button>
    </div>
    <template #reference>
      <el-button>Delete</el-button>
    </template>
  </el-popover>
</template>

<script lang='ts'>
import { defineComponent, ref } from 'vue';

export default defineComponent({
  setup() {
    const popoverRef = ref<any>(null);
    // 关闭
    const handleClose = () => {
      popoverRef.value.hide();
    };
    return {
      popoverRef,
      handleClose,
    };
  },
});
</script>

在表格中循环

此情况ref不唯一 ，如果用上面的方法，会发现只有一个弹出框会消失，其余的都不会消失

<template>
  <el-table :data="[]">
    <el-table-column label="状态" align="center">
      <template #default="{ row }">
        <el-popover trigger="click" :ref="setRefs" placement="top">
          <p>Are you sure to delete this?</p>
          <div style="text-align: right; margin: 0">
            <el-button size="small" text @click="handleClose()">cancel</el-button>
            <el-button size="small" type="primary" @click="handleClose()">confirm</el-button>
          </div>
          <template #reference>
            <el-button>Delete</el-button>
          </template>
        </el-popover>
      </template>
    </el-table-column>
  </el-table>
</template>

<script lang='ts'>
import { defineComponent, ref, onBeforeUpdate } from 'vue';

export default defineComponent({
  setup() {
    const refs = ref<any[]>([]);
    // 使用回调的方式收集
    const setRefs = (el: any) => {
      refs.value.push(el);
    };
    // 更新时-重置refs
    onBeforeUpdate(() => {
      refs.value = [];
    });
    // 关闭
    const handleClose = () => refs.value.forEach(v => v.hide());
    return {
      setRefs,
      handleClose,
    };
  },
});
</script>