vue中多个倒计时实现代码实例

 <!-- template -->
 <div v-for="(item,index) in list" :key="index" class="act_item">
 <h1>{{ item.title }}</h1>
 <img :src="item.pic" alt="">
 <div class="act_info">
  <h2><span>{{ item.count }}</span>个视频</h2>
  <div class="time">倒计时{{ item.djs }}</div>
  <div class="clear"></div>
 </div>
 </div>

<script>
function InitTime(endtime){
 var dd,hh,mm,ss = null;
 var time = parseInt(endtime) - new Date().getTime();
 if(time<=0){
 return '结束'
 }else{
 dd = Math.floor(time / 60 / 60 / 24);
 hh = Math.floor((time / 60 / 60) % 24);
 mm = Math.floor((time / 60) % 60);
 ss = Math.floor(time % 60);
 var str = dd+"天"+hh+"小时"+mm+"分"+ss+"秒";
 return str;
 }
}
export default {
 data () {
	return {
  active: 'tab-container1',
  pinkFont:true,
  // 上拉刷新、下拉加载
  allLoaded: false, //如果为true,禁止上拉刷新
  autoFill: false, //取消自动填充，
  list: [],
 	}
 },
 created() {
 var ssss = [
  {"title": "小心愿，大梦想","pic":"../../assets/img/new/act1.jpg","count":"34","time":"1525293470350"},
  {"title": "杭州国际时装周童模招募","pic":"../../assets/img/new/act2.jpg","count":"36","time":"1525293470350"},
  {"title": "怪兽bobo全线代言火爆杭城的联名秀招募童模啦！","pic":"../../assets/img/new/act3.jpg","count":"74","time":"1529253270350"},
  {"title": "汉风唐韵 、别","pic":"../../assets/img/new/act2.jpg","count":"266","time":"1525753270350"},
  {"title": "听说你们想和明星超模同台“PK”？","pic":"../../assets/img/new/act1.jpg","count":"97","time":"1525253270450"},
 ];
 ssss.map( (obj,index)=>{
  this.$set(
  obj,"djs",InitTime(obj.time)
  );
 })
 this.list = ssss;
 },
 mounted() {
 setInterval( ()=> {
  for (var key in this.list) {
  var aaa = parseInt( this.list[key]["time"] );
  var bbb = new Date().getTime();
  var rightTime = aaa - bbb;
  if (rightTime > 0) {
   var dd = Math.floor(rightTime / 1000 / 60 / 60 / 24);
   var hh = Math.floor((rightTime / 1000 / 60 / 60) % 24);
   var mm = Math.floor((rightTime / 1000 / 60) % 60);
   var ss = Math.floor((rightTime / 1000) % 60);
  }
  this.list[key]["djs"] = dd + "天" + hh + "小时" + mm + "分" + ss + "秒";
  }
 }, 1000);
 
 },
 methods: {
 
 }
}
</script>