data(){

   return {

     nowTime:''

   }

  },

<div>{{nowTime}}</div>

 //显示当前时间（年月日时分秒）

    timeFormate(timeStamp) {

      let year = new Date(timeStamp).getFullYear();

      let month =new Date(timeStamp).getMonth() + 1 < 10? "0" + (new Date(timeStamp).getMonth() + 1): new Date(timeStamp).getMonth() + 1;

      let date =new Date(timeStamp).getDate() < 10? "0" + new Date(timeStamp).getDate(): new Date(timeStamp).getDate();

      let hh =new Date(timeStamp).getHours() < 10? "0" + new Date(timeStamp).getHours(): new Date(timeStamp).getHours();

      let mm =new Date(timeStamp).getMinutes() < 10? "0" + new Date(timeStamp).getMinutes(): new Date(timeStamp).getMinutes();

      let ss =new Date(timeStamp).getSeconds() < 10? "0" + new Date(timeStamp).getSeconds(): new Date(timeStamp).getSeconds();

      this.nowTime = year + "年" + month + "月" + date +"日"+" "+hh+":"+mm+':'+ss ;

    },

    nowTimes(){

      this.timeFormate(new Date());

      setInterval(this.nowTimes,1000);

      this.clear()

    },

    clear(){

      clearInterval(this.nowTimes)

      this.nowTimes = null;

    }