el-table的selection多选表格改为单选

需求场景: 选择表格数据时，需要控制单条数据的操作按钮是否禁用。

效果图:

html代码:

javascript 复制代码

<div>
    <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 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>
  </div>

js代码:

javascript 复制代码

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: [], // 多选存储数据
      checkedSelection: {}, // 单选存储数据
    };
  },
  mounted() {
    document.onclick = () => {
      console.log('单选--checkedSelection', this.checkedSelection);
    }
  },
  methods: {
    toggleSelection(rows) {
      if (rows) {
        rows.forEach((row) => {
          this.$refs.multipleTable.toggleRowSelection(row);
        });
      } else {
        this.$refs.multipleTable.clearSelection();
      }
    },
    // 设置单选主要代码
    handleSelectionChange(val) {
      console.log('val--==', val);
      // 默认多选
      // this.multipleSelection = val;

      // 单选
      if(val.length == 1){
        let item = val[val.length -1];
        this.checkedSelection = JSON.parse(JSON.stringify(item));
      }

      // 单选选中多条时，需要清空所选数据
      if(val.length > 1){
        this.$refs.multipleTable.clearSelection(); // 清空选项
        this.$refs.multipleTable.toggleRowSelection(val.pop()); // 选中最后点击的数据
      }

      // 取消选中
      if(val.length == 0){
        this.checkedSelection = {};
      }
    },
  },
};

css代码:

javascript 复制代码

<style lang="less" scoped>
// 禁用table全选按钮
.table-wrap{
  /deep/.el-table__header{
    .el-checkbox{
      display: none;
    }
  }
}
</style>