elementUI修改单元格、行背景色，

修改单元格背景色cell-style，修改行背景色row-style

<template>
  <el-table
    :data="tableData"
    :cell-style="TableCellStyle"
    :row-style="TableRowStyle"
    border
    style="width: 100%">
    <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>

<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'
        }]
      }
    },
    methods: {
    	// 改变单元格背景颜色
		TableCellStyle({row, column, rowIndex, columnIndex}) {
			if (columnInex === 3) {
				return 'background-color: '#ccc''
				//第二种
				return 'cell-grey'
			}
		},
		// 改变行背景颜色
		TableRowStyle({row, rowIndex}) {
			if (rowIndex === 2) {
				return 'background-color: rgba(255,0,0,0.4)'
				//第二种
				return 'cell-grey'
			}
		}
	}
  }
</script>
<style>
.cell-grey{
    background: #f2f2f2;
}
</style>