element-ui表格中复选框只能选中一个

方案一：直接在el-table中使用

如图所示：复选框只能选中一个

代码：

<el-table
          ref="multipleTable"
          :data="updatetableData"
          style="width: 100%"
          @selection-change="updatehandleSelectionChange"
          @select="select"
          @select-all="selectAll"
        >
          <el-table-column type="selection"></el-table-column>
          <el-table-column prop="id" label="ID"></el-table-column>
          <el-table-column prop="name" label="精品名称"></el-table-column>
          <el-table-column prop="tag" label="排序">
            <template slot-scope="scope">
              <el-input v-model="scope.row.sort" />
            </template>
          </el-table-column>
        </el-table>

methods中：

toggleRowSelection：用于多选表格，切换某一行的选中状态，如果使用了第二个参数，则是设置这一行选中与否（selected 为 true 则选中）

select(selection, row) {
      if (selection.length > 1) {
        let del_row = selection.shift()
        this.$refs.multipleTable.toggleRowSelection(del_row, false)
      }
    },
selectAll(selection){
      if (selection.length > 1) {
        selection.length = 1
      }
    }

方案二：把el-table封装成了组件

myTable.vue封装的组件

<el-table ref="tableRef">
	<el-table-column  @select-all="selectAll" @select="select"></el-table-column>
</el-table>

methods:{
	 select(selection) {
      if (selection.length > 1) {
        let del_row = selection.shift()
        this.$refs.tableRef.toggleRowSelection(del_row, false)
      }
    },
    selectAll(selection) {
      if (selection.length > 1) {
        selection.length = 1
      }
    },
}

2.在子组件中使用myTable组件

import MyTable from './myTable.vue'
<my-table ref="selfTableRef"  @select-all="selectAll" @select="select">
</my-table>
methods: {
	select(selection) {
      this.$refs.selfTableRef.select(selection)
    },
    selectAll(selection){
     this.$refs.selfTableRef.selectAll(selection)
    },
}