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效果
代码实现
<template>
<div>倒计时: {
{
keepTime }}</div>
</template>
<script>
export default {
data() {
return {
keepTime: "",
};
},
created() {
this.StartCountDown();
},
methods: {
// 开始时间
StartCountDown() {
var mydate = new Date();
mydate.setMinutes(mydate.getMinutes() + 90); //获取后端返回的时间
this.settime = mydate;
// 时间到执行停止
let time = setInterval(() => {
if (this.flag == true) {
clearInterval(time);
}
this.timeDown();
}, 100);
},
// 转换
timeDown() {
const endTime = new Date(this.settime);
const nowTime = new Date();
let leftTime = parseInt((endTime.getTime() - nowTime.getTime()) / 1000);
let d = parseInt(leftTime / (24 * 60 * 60));
let h = this.formate(parseInt((leftTime / (60 * 60)) % 24));
let m = this.formate(parseInt((leftTime / 60) % 60));
let s = this.formate(parseInt(leftTime % 60));
if (leftTime <= 0) {
}
this.keepTime = `${h}:${m}:${
s}`;
//计算考试时间
//var parts = this.keepTime.split(":");
// var num = parseInt(parts[0]) * 60 + parseInt(parts[1]) + parseInt(parts[2]) / 60;
// var minutes = Math.floor(num * 100) / 100;
//var timelength = this.WhenTime - minutes;//this.WhenTime 为考试时间如：100分钟减去所转换的时间
// this.timelengthasd = Math.ceil(timelength);//向上取整不到一分钟按一分钟算
},
formate(time) {
if (time >= 10) {
return time;
} else {
return `0${
time}`;
}
},
},
};
</script>
<style>
</style>
