element ui-表头自定义提示框

• 版本
  “element-ui”: “^2.15.5”,
• 需求：鼠标悬浮到该列表头，显示提示框
• 代码

	<el-table:data="xxxx"><el-table-column  label="序号" width="40" type="index"  /><el-table-columnv-for="(item) in xx2":key="item.prop":prop="item.prop":label="item.lable">// 表身插槽<template slot-scope="scope"><divv-if="scope.column.label !== 'xxx'">{{scope.row[scope.column.property] ? scope.row[scope.column.property] : '无'}}</div><div v-else><el-switchv-if="scope.column.label === '是否入伍'"v-model="scope.row[scope.column.property]"@change="changeSwitch(scope.column,scope.row,scope.$index)"active-text="是"inactive-text="否"active-value=1inactive-value=0></el-switch></div></template>//  表头插槽<template slot="header" slot-scope="scope"><span v-if="item.prop!='xxA'">{{ scope.column.label }}</span>// prop等于xxA 的有提示框<el-tooltip v-else  effect="dark" content="你想提示的弹框信息字段" placement="top"><span>{{ scope.column.label }}</span></el-tooltip></template></el-table-column></el-table>