vue+elementUI实现表格关键字筛选高亮

<template>
 <div class="">
 <div class="top">
 <!-- 筛选 -->
 <div class="screen">
 <div style="width:30%">筛选：</div>
 <el-input type="search" v-model="search" style="width:70%" placeholder="请输入关键字"></el-input>
 </div>
 </div>
 <!-- 表格 -->
 <div class="table">
 <el-table
 :data="tables"
 style="width: 100%"
 max-height=500>
 <!-- 地址 -->
 <el-table-column label="时间">
 <template slot-scope="scope"> 
 <span class="col-cont" v-html="showDate(scope.row.date)" ></span>
 </template>
 </el-table-column>
 <!-- 用户名 -->
 <el-table-column label="用户名">
 <template slot-scope="scope">
 <span class="col-cont" v-html="showDate(scope.row.name)" ></span>
 </template>
 </el-table-column>
 <!-- 地址 -->
 <el-table-column label="地址">
 <template slot-scope="scope">
 <span class="col-cont" v-html="showDate(scope.row.address)" ></span>
 </template>
 </el-table-column> 
 </el-table>
 </div>
 </div>
</template>

<script>
 export default {
 data() {
 return {
 search: '',
 tableData: [{
 date: '2016-05-02',
 name: '张三',
 address: '上海市普陀区金沙江路 1518 弄'
 }, {
 date: '2016-05-04',
 name: '李四',
 address: '上海市普陀区金沙江路 1517 弄'
 }, {
 date: '2016-05-01',
 name: '王五',
 address: '上海市普陀区金沙江路 1519 弄'
 }, {
 date: '2016-05-03',
 name: '赵六',
 address: '上海市普陀区金沙江路 1516 弄'
 }]
 }
 },
 components: {},
 computed: {
 // 实时监听表格
 tables: function() {
 const search = this.search
 if (search) {
 return this.tableData.filter(dataNews => {
 return Object.keys(dataNews).some(key => {
 return String(dataNews[key]).toLowerCase().indexOf(search) > -1
 })
 })
 }
 return this.tableData
 }
 },
 mounted() {},
 methods: {
 // 筛选变色
 showDate(val) {
 val = val + '';
 if (val.indexOf(this.search) !== -1 && this.search !== '') {
 return val.replace(this.search, '<font color="#409EFF">' + this.search + '</font>')
 } else {
 return val
 }
 }
 }
 }
</script>