微信截图_20190524183613.png

1、

<el-table
      ref="multipleTable"
      :data="tableData3"
      tooltip-effect="dark"
      style="width: 100%"
      @selection-change="handleSelectionChange"
      @row-click="handleclick"

      :row-style="rowClass"  //核心项

      row-key="id"
    >

2/

data(){
  return {
 selectRow: [],
multipleSelection:[]
}
}

3/

watch: {
    multipleSelection(data) {  //存储选中的row
      this.selectRow = [];
      if (data.length > 0) {
        data.forEach((item, index) => {
          this.selectRow.push(item.id);
        });
      }
    }
  },

4/

methods: {
    rowClass({ row, rowIndex }) {
      if (this.selectRow.includes(row.id)) {
        return { "background-color": "rgba(185, 221, 249, 0.75)" };
      }
    },
handleSelectionChange(val) {
      this.multipleSelection = val;
      console.log(val, "多选");
    },
}