<Row class="operation">      
        <Button @click="delAll" icon="md-trash">批量删除</Button>
      </Row>
      <Row>
        <Alert show-icon>
          已选择
          <span class="select-count">{{selectCount}}</span> 项
          <a class="select-clear" @click="clearSelectAll">清空</a>
        </Alert>
      </Row>
table
 <Table
          :loading="loading"
          border
          :columns="columns"
          :data="data"
          ref="table"
          sortable="custom"
          @on-sort-change="changeSort"
          @on-selection-change="changeSelect"
        ></Table>
    
    data
     selectList: [], // 多选数据
     selectCount: 0, // 多选计数

    method
    //批量删除
    delAll() {
      if (this.selectCount <= 0) {
        this.$Message.warning("您还未选择要删除的数据");
        return;
      }
      this.$Modal.confirm({
        title: "确认删除",
        content: "您确认要删除所选的 " + this.selectCount + " 条数据?",
        onOk: () => {
          let ids = "";
          this.selectList.forEach(function(e) {
            ids += e.id + ",";
          });
          ids = ids.substring(0, ids.length - 1);
          // 批量删除
          // this.deleteRequest("请求地址，如/deleteByIds/" + ids).then(res => {
          //   if (res.success) {
          //     this.$Message.success("操作成功");
          //     this.clearSelectAll();
          //     this.getDataList();
          //   }
          // });
          // 模拟请求成功
          this.$Message.success("操作成功");
          this.clearSelectAll();
          this.getDataList();
        }
      });
    },
    //清空
    clearSelectAll() {
      this.$refs.table.selectAll(false);
    },
    //多选
    changeSelect(e) {
      this.selectList = e;
      this.selectCount = e.length;
    },
    //排序
    changeSort(e) {
      this.sortColumn = e.key;
      this.sortType = e.order;
      if (e.order == "normal") {
        this.sortType = "";
      }
      this.getDataList();
    },