vue seTimeout频繁创建不停止问题

src/views/bridgesConsole/bridgeDanger/dangerDetail.vue

      </div>
      <div class="load-box" v-loading="loadprogress">
        <el-row class="line-chart-box">
          <el-col :xs="24" :sm="24" :lg="24" v-for="(item, index) in alarmShowList" :key="item.index">
            <lineChart :chartData="item" :lineColor="index" :historyM="historyM"></lineChart>
          <el-col :xs="24" :sm="24" :lg="24" v-for="item in alarmShowList" :key="item.index">
            <lineChart :chartData="item" :historyM="historyM"></lineChart>
          </el-col>
        </el-row>
      </div>

src/views/bridgesConsole/bridgeDetail/index.vue

      maxShowLength: 300,
      monitorList: [],
      monitorCache: [],
      jishiTime: null
      jishiTime: ''
    }
  },
  computed: {
      return this.monitorList.slice((this.currentNo - 1) * this.currentSize, this.currentNo * this.currentSize)
    }
  },
  beforeCreate() {
    clearTimeout(this.jishiTime)
    this.jishiTime = null
  },
  created() {
    var that = this
    if (this.jishiTime) {
      clearTimeout(this.jishiTime)
    }
    if (urlParse('id')) {
      that.bridgeId = urlParse('id')
      that.bridgeName = urlParse('name')
  methods: {
    updateDataList() {
      clearTimeout(this.jishiTime)
      this.jishiTime = null
      this.jishiTime = ''
      this.sysTime = ''
      this.monitorList = []
      this.monitorCache = []
      this.getSysTime()
            }
          }
          that.monitorList = mList
          var st = new Date().getTime() + that.eastEightDistrict - that.localTimeiv
          var iv = that.sysTime - st
          if (iv < 0) {
            iv = 1
          if (that && !that._isDestroyed) {
            var st = new Date().getTime() + that.eastEightDistrict - that.localTimeiv
            var iv = that.sysTime - st
            if (iv < 0) {
              iv = 1
            }
            that.jishiTime = setTimeout(function() {
              if (that && !that._isDestroyed) {
                that.getTimingMonitor()
              }
            }, iv)
          } else {
            that.jishiTime = ''
          }
          that.jishiTime = setTimeout(() => {
            that.getTimingMonitor()
          }, iv)
        }
      })
    },
    }
  },
  beforeDestroy() {
    clearTimeout(this.jishiTime)
    this.jishiTime = null
  },
  destroyed() {
    clearTimeout(this.jishiTime)
    this.jishiTime = null
    this.$once('hook:beforeDestroy', () => {
      clearInterval(this.jishiTime)
    })
  }
}
</script>