代码
<!-- 使用计算属性，传入截止日期 --> <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() { //定时更新当前时间 setInterval(()=>{ this.now = moment() },1000), //数字前补 0 // num传入的数字，n需要的字符长度 PrefixInteger(num, n) { return (Array(n).join(0) + num).slice(-n); } }, computed: { //计算属性，返回剩余时间 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 "已超时" }else { return this.PrefixInteger(hours,2) + ':' + this.PrefixInteger(mins,2) + ':' + this.PrefixInteger(ss,2) } } } }, }