<!-- 使用計(jì)算屬性，傳入截止日期 --><span>{{countDown(endDate)}}</span>

/*引入日期插件*/import moment from 'moment'export default { data() {  return {   now: moment(),   endDate: '2019-05-07 08:20:00',  } }, mounted() {  //定時(shí)更新當(dāng)前時(shí)間 setInterval(()=>{  this.now = moment() },1000),  //數(shù)字前補(bǔ) 0   // num傳入的數(shù)字，n需要的字符長(zhǎng)度 PrefixInteger(num, n) {  return (Array(n).join(0) + num).slice(-n); } }, computed: {  //計(jì)算屬性，返回剩余時(shí)間  countDown(){   return function(endDate) {    let m1 = this.now    let m2 = moment(endDate)    var du = moment.duration(m2 - m1, 'ms'),    hours = du.get('hours'),    mins = du.get('minutes'),    ss = du.get('seconds');    if(hours<=0 && mins<=0 && ss<=0) {     return "已超時(shí)"    }else {     return this.PrefixInteger(hours,2) + ':' + this.PrefixInteger(mins,2) + ':' + this.PrefixInteger(ss,2)    }   }  } },}