vue,使用elementui，实现表格点击每一行换个颜色

<template>
    <div>
 
      <template>
        <el-table
        :data="tableData"
        style="width: 100%"
        @row-click="clickData"
        :row-class-name="tableRowClassName"
        >
        <el-table-column
            prop="date"
            label="日期"
        
            width="180">
        </el-table-column>
        <el-table-column
            prop="name"
            label="姓名"
            width="180">
        </el-table-column>
        <el-table-column
            prop="address"
            label="地址">
        </el-table-column>
        </el-table>
  </template>
    </div>
</template>
<script>
export default {
    data() {
        return {
            tableData: [{
            date: '2016-05-02',
            name: '王小虎',
            address: '上海市普陀区金沙江路 1518 弄'
          }, {
            date: '2016-05-04',
            name: '王小虎',
            address: '上海市普陀区金沙江路 1517 弄'
          }, {
            date: '2016-05-01',
            name: '王小虎',
            address: '上海市普陀区金沙江路 1519 弄'
          }, {
            date: '2016-05-03',
            name: '王小虎',
            address: '上海市普陀区金沙江路 1516 弄'
          }],
          abc:0 
        }
    },
    methods:{
        clickData(row) {
                console.log(row.index)
                this.abc= row.index
            },
        tableRowClassName({row,rowIndex}){
            row.index = rowIndex //浅拷贝，让row有index
            if(rowIndex == this.abc){
                return 'success-row';
            }
        }   
       
    },
 
}
</script>
<style>
  .el-table .warning-row {
    background: oldlace;
  }
 
  .el-table .success-row {
    background: #f0f9eb;
  }
</style>