websocket 接受数据后做判断

Question

问题：打印出出来的是对的但是页面上还是显示的后台的数据

domewebsocket.onmessage = function (res) {
          const val = JSON.parse(res.data)
          that.data.time_dome = val.time_dome;
          that.data.dome_status = val.dome_status;
          that.data.dome_control = val.dome_control;
        }
        if(that.data.dome_status==0){
          this.data.dome_status="正常"
          console.log("dimm原顶"+this.data.dome_status)//打印出出来的是对的文字
        }else{
          this.dome_status="故障"
        }