element ui中表格table翻页记忆勾选状态

 <el-table ref="multipleTable" :data="datalist" style="width:100%" @select="handleselectRow" @select-all="handleselectAll" size="small" >
　　<el-table-column type="selection" prop="houseId" align="center"></el-table-column>
</el-table>

  //初始化列表数据
 init(currentPage, pageSize) {
      let _this = this;
      let parmas = {
        currentPage: currentPage,
        pageSize: pageSize,
        communityId: this.form.communityId,
        companyId: this.form.companyId
      };

      // this.Utils.exeuhttpResquestGet(this.apiUrls.communityManagement.getTableData, {}, result => {
      _this.Utils.exeuhttpResquestPost(this.apiUrls.rate.selectHouseInfoRate, parmas, result => {
        _this.datalist = result.data.data.dataList;
        _this.total = result.data.data.totalCount;
        _this.$nextTick(function () {
          _this.memoryChecked();
        })
      });
    },
    //行选中函数  若有删除，若无添加
    handleselectRow(selection, row) {
      if (this.selectObj[row.houseId]) {
        delete this.selectObj[row.houseId]
      } else {
        this.selectObj[row.houseId] = row.houseId
      }
    },
    //全选函数  点击全选遍历当页数据若无添加,若是反选则删除(判断是否是全选还是反选)
    handleselectAll(selection) {
      this.datalist.forEach((row, index) => {
        if (this.selectObj.hasOwnProperty(row.houseId)) {
          selection.length ? null : delete this.selectObj[row.houseId]
        } else {
          this.selectObj[row.houseId] = row.houseId
        }
      });
    },
    //记忆函数
    memoryChecked(){
      this.datalist.forEach((row, index) => {
        if (this.selectObj.hasOwnProperty(row.houseId)) {
          this.$refs.multipleTable.toggleRowSelection(row, true);
        } else {
          this.$refs.multipleTable.toggleRowSelection(row, false);
        }
      });
    },