Vue开发--Element 的Table组件判断当前是勾选状态还是取消勾选状态

实现多选非常简单: 手动添加一个el-table-column，设type属性为selection即可；默认情况下若内容过多会折行显示，若需要单行显示可以使用show-overflow-tooltip属性，它接受一个Boolean，为true时多余的内容会在 hover 时以 tooltip 的形式显示出来。

<template>
<el-table
ref="multipleTable"
:data="tableData"
tooltip-effect="dark"
style="width: 100%"
@select='onTableSelect'    /*判断当前表格勾选的是选中的还是取消选中的 */
@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 style="margin-top: 20px">
<el-button @click="toggleSelection([tableData[1], tableData[2]])">切换第二、第三行的选中状态</el-button>
<el-button @click="toggleSelection()">取消选择</el-button>
</div>
</template>

<script>
export default {
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: []
}
},

methods: {
toggleSelection(rows) {
if (rows) {
rows.forEach(row => {
this.$refs.multipleTable.toggleRowSelection(row);
});
} else {
this.$refs.multipleTable.clearSelection();
}
},
handleSelectionChange(val) {
this.multipleSelection = val;
},
onTableSelect(rows, row) {
let selected = rows.length && rows.indexOf(row) !== -1
console.log(selected)  // true就是选中，0或者false是取消选中
}
}
}
</script>