vue中轮训器的使用

<template>
  <div >
   {{log}}
  </div>
</template>
<script>
  export default {
    name: "TrainingInRotation",
   data(){
    return {
     log:0,
     timerId:1, // 模拟计时器id，唯一性
     timerObj :{}, // 计时器存储器
    }
   },
   created(){
     this.startTraining();
   },
   methods: {
    /*
   * 开始轮训
   * */
    startTraining() {
     let this_ = this;
     const id = this.timerId++
     this.timerObj[id] = true
     async function timerFn() {
      if (!this_.timerObj[id]) return
      await this_.getData();
      setTimeout(timerFn, 1 * 1000)
     }
     timerFn();
    },
    /*
    * 停止轮训
    * */
    stopTime() {
     this.timerObj = {}
    },
    /*
    * 要轮训的代码
    * */
    getData(){
     this.log+=1;
     console.log("this.log:"+this.log);
    }
   },
   destroyed(){
    this.stopTime();
   }
  }
</script>
<style scoped>
</style>