HTML：
<div v-for="(i,index) in mydata" :key="index">{{countDownList[index].day}}天{{countDownList[index].hou}}时{{countDownList[index].min}}分{{countDownList[index].sec}}秒</div>
script：
export default {
data() {
return {
mydata: [{
actEndTime: '2018-10-19 18:50:00'
}, {
actEndTime: '2018-11-20 01:00:00'
}, {
actEndTime: '2018-12-20 02:00:00'
}],
actEndTimeList: [],
countDownList: []
};
},
created() {
this.dataName();
},
methods: {
dataName() {
let endTimeList = [];
// 将活动的结束时间参数提成一个单独的数组，方便操作
this.mydata.forEach(o => {
endTimeList.push(o.actEndTime);
});
this.actEndTimeList = endTimeList;
this.countDown();
},
timeFormat(param) {
return param < 10 ? '0' + param : param;
},
countDown(it) {
// 获取当前时间，同时得到活动结束时间数组
let newTime = new Date().getTime();
let endTimeList = this.actEndTimeList;
let countDownArr = [];
// 对结束时间进行处理渲染到页面
endTimeList.forEach(o => {
let endTime = new Date(o).getTime();
let obj = null;
// 如果活动未结束，对时间进行处理
if (endTime - newTime > 0) {
let time = (endTime - newTime) / 1000;
// 获取天、时、分、秒
let day = parseInt(time / (60 * 60 * 24));
let hou = parseInt(time % (60 * 60 * 24) / 3600);
let min = parseInt(time % (60 * 60 * 24) % 3600 / 60);
let sec = parseInt(time % (60 * 60 * 24) % 3600 % 60);
obj = {
day: this.timeFormat(day),
hou: this.timeFormat(hou),
min: this.timeFormat(min),
sec: this.timeFormat(sec)
};
} else { // 活动已结束，全部设置为'00'
obj = {
day: '00',
hou: '00',
min: '00',
sec: '00'
};
}
countDownArr.push(obj);
});
this.countDownList = countDownArr;
setTimeout(this.countDown, 1000);
}
}
}