elpopover弹窗组件，在收到socket通知后自动显示

<div v-for="(item,index) in roomList" :key="index">
    <el-popover
       :ref="`popover_${index}`"
       placement="bottom"
       width="230"
       @show="showPopup"
       trigger="click">
        <div id="roomId" slot="reference">点击此处触发展示</div>
        <div class="roomInfo">详情展示区域</div>
    </el-popover>
</div>

　

that.$refs['popover_1'][0].doShow()
// doClose隐藏