<script>  
//定時(shí)器 異步運(yùn)行  
function hello(){  
alert("hello");  
}  
//使用方法名字執(zhí)行方法  
var t1 = window.setTimeout(hello,1000);  
var t2 = window.setTimeout("hello()",3000);//使用字符串執(zhí)行方法  
window.clearTimeout(t1);//去掉定時(shí)器  
</script>

//實(shí)時(shí)刷新時(shí)間單位為毫秒  
setInterval('refreshQuery()',8000);   
/* 刷新查詢 */  
function refreshQuery(){  
   $("#mainTable").datagrid('reload',null);  
}

<div class="father">
  <ul>
   <li>{{one}}<span>:</span></li>
   <li>{{two}}<span>:</span></li>
   <li>{{three}}</li>
  </ul>
  <el-button type="primary" @click="startHandler">開始</el-button>
  <el-button type="primary" @click="endHandler">暫停</el-button>
</div>

<script>
export default {
  name: 'HelloWorld',
  data(){
   return {
  flag: null,
  one : '00', // 時(shí)
  two : '00', // 分
  three : '00', // 秒
  abc : 0, // 秒的計(jì)數(shù)
  cde : 0, // 分的計(jì)數(shù)
  efg : 0, // 時(shí)的計(jì)數(shù)
   }
  },
  props: {
    msg: String
  },
  mounted() {
   
  },
  methods:{
  // 開始計(jì)時(shí)
 startHandler(){
  this.flag = setInterval(()=>{
   if(this.three === 60 || this.three === '60'){
    this.three = '00';
    this.abc = 0;
    if(this.two === 60 || this.two === '60'){
     this.two = '00';
     this.cde = 0;
     if(this.efg+1 <= 9){
      this.efg++;
      this.one = '0' + this.efg;
     }else{
      this.efg++;
      this.one = this.efg;
     }
    }else{
     if(this.cde+1 <= 9){
      this.cde++;
      this.two = '0' + this.cde;
     }else{
      this.cde++;
      this.two = this.cde;
     }
    }
   }else{
    if(this.abc+1 <= 9){
     this.abc++;
     this.three = '0' + this.abc;
    }else{
     this.abc++;
     this.three=this.abc;
    }
   }
   
  },100)
 },
 // 暫停計(jì)時(shí)
 endHandler(){
  this.flag = clearInterval(this.flag)
 }
  }
}
</script>