将同一楼层的数据，归属到同一个数组

      const floorList = [];
      const roomIdList = [];
      needfloorList.forEach(listItem => {
        const floorObj = floorList.find(
          item => item.floorNumber === listItem.floor
        );
        if (floorObj) {
          roomIdList.push(listItem.id);
          return floorObj.roomOptions.push({
            roomName:
              this.currentBuilding.label +
              '-' +
              (~listItem.unit.indexOf('单元')
                ? listItem.unit
                : listItem.unit + '单元') +
              '-' +
              listItem.room,
            roomValue: listItem.id
          });
        }
        roomIdList.push(listItem.id);
        floorList.push({
          floorNumber: listItem.floor,
          roomOptions: [
            {
              roomName:
                this.currentBuilding.label +
                '-' +
                (~listItem.unit.indexOf('单元')
                  ? listItem.unit
                  : listItem.unit + '单元') +
                '-' +
                listItem.room,
              roomValue: listItem.id
            }
          ]
        });
      });