vue+element ui表格中插入多选框

效果：

 

代码：

<template>
  <div id="app">
    <el-table :data="tableData" style="width: 100%">
      <el-table-column>
        <template slot="header" slot-scope="scope">
          <el-checkbox :indeterminate="isIndeterminate"
                       v-model="checkAll"
                       @change="handleCheckAllChange">多选</el-checkbox>
        </template>
        <template slot-scope="scope">
          <el-checkbox v-model="scope.row.checked"
                       @change="handleCheckOneChange(scope.row)"></el-checkbox>
        </template>
      </el-table-column>
      <el-table-column
          label="姓名"
          prop="name">
      </el-table-column>
      <el-table-column
          label="性别"
          prop="sex">
      </el-table-column>
    </el-table>
  </div>
</template>
<script>

export default {
  name: 'App',
  data () {
    return {
      tableData: [{
        name: '张三',
        sex: '男',
        checked: false
      }, {
        name: '李四',
        sex: '女',
        checked: true
      }],
      checkAll: false,
      isIndeterminate: true
    }
  },

  methods: {
    handleCheckAllChange (val) {
      // val 是该行对象中的checked属性
      console.info('check all change is ', val)
      this.isIndeterminate = false
      this.tableData.forEach(item => {
        item.checked = val
      })
    },

    handleCheckOneChange (obj) {
      // obj 是指该行的整个对象
      console.info('check one change is ', obj)
      let totalCount = this.tableData.length
      let someStatusCount = 0
      this.tableData.forEach(item => {
        if (item.checked === obj.checked) {
          someStatusCount++
        }
      })
      this.checkAll = totalCount === someStatusCount ? obj.checked : !obj.checked
      this.isIndeterminate = someStatusCount > 0 && someStatusCount < totalCount
    }
  }
}
</script>