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<!DOCTYPE html>
<html>

<head>
	<meta charset="utf-8">
	<script src="https://unpkg.com/vue@2.6.14/dist/vue.min.js">

	</script>
	<!-- 引入样式 -->
	<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
	<!-- 引入组件库 -->
	<script src="https://unpkg.com/element-ui/lib/index.js">

	</script>
</head>

<body>
	<div id="app">
		<el-table ref="multipleTable" :data="tableData" tooltip-effect="dark" style="width: 100%" @selection-change="handleSelectionChange">
			<el-table-column type="selection" width="55">
			</el-table-column>
			<el-table-column label="日期" width="120">
				<template slot-scope="scope">{{ scope.row.date }}</template>
			</el-table-column>
			<el-table-column prop="name" label="姓名" width="120">
			</el-table-column>
			<el-table-column prop="address" label="地址" show-overflow-tooltip>
			</el-table-column>
		</el-table>
	</div>

	<script>
		new Vue({
  el: '#app',
   data() {
      return {
        tableData: [{
          date: '2016-05-03',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          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 1518 弄'
        }, {
          date: '2016-05-01',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          date: '2016-05-08',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          date: '2016-05-06',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }, {
          date: '2016-05-07',
          name: '王小虎',
          address: '上海市普陀区金沙江路 1518 弄'
        }],
        multipleSelection: []
      }
    },
    mounted(){
        //核心代码
      this.tableData.forEach((item,index) => {
        this.$nextTick(() => {
            if(index == 2 || index ==3){
                this.$refs.multipleTable.toggleRowSelection(item, true)
            }
        })
    })
    },
     methods: {
      toggleSelection(rows) {
        if (rows) {
          rows.forEach(row => {
            this.$refs.multipleTable.toggleRowSelection(row);
          });
        } else {
          this.$refs.multipleTable.clearSelection();
        }
      },
      handleSelectionChange(val) {
        this.multipleSelection = val;
      }
    }
})
	</script>
</body>

</html>