2020年06月05日09:22:43作者Vam防刷新考试倒计时组件

  Vue 封装防刷新考试倒计时组件的实现

  更新时间：2020年06月05日 09:22:43 作者：Vam的金豆之路

  这篇文章主要介绍了Vue 封装防刷新考试倒计时组件的实现js 倒计时防刷新，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小绿绿来一起学习学习吧

  本文详细的介绍了防刷新考试倒计时组件js 倒计时防刷新，分享给大家，也给自己留个笔记，感兴趣的可以了解下

00:{{timerCount2}}:{{timerCount1}}重新计时export default { name: "Time", data() { return { timeSeconds: 0, timeMinutes: 0, seconds: 59, // 秒 minutes: 1, // 分 timer: null }; }, methods: { num(n) { return n < 10 ? "0" + n : "" + n; }, // 重新计时 reset() { sessionStorage.removeItem("answered"); window.location.reload(); localStorage.removeItem("startTime1"); localStorage.removeItem("startTime2"); clearInterval(this.timer); }, // 清除 clear() { localStorage.removeItem("startTime1"); localStorage.removeItem("startTime2"); sessionStorage.setItem("answered", 1); clearInterval(this.timer); }, // 倒计时 timing() { let [startTime1, startTime2] = [ localStorage.getItem("startTime1"), localStorage.getItem("startTime2") ]; let nowTime = new Date().getTime(); if (startTime1) {let surplus = this.seconds - parseInt((nowTime - startTime1) / 1000);
this.timeSeconds = surplus  {
if ( this.timeSeconds == 0 && this.timeMinutes != 0 && this.timeMinutes > 0 ) {
 let nowTime = new Date().getTime();
 this.timeSeconds = this.seconds;
 localStorage.setItem("startTime1", nowTime);
 this.timeMinutes--;
 localStorage.setItem("startTime2", this.timeMinutes);
} else if (this.timeMinutes == 0 && this.timeSeconds == 0) {
 this.timeSeconds = 0;
 this.clear();
 alert("考试时间到");
} else {
 this.timeSeconds--;
}}, 1000); } }, mounted() { if (sessionStorage.getItem("answered") != 1) { this.timing(); } }, computed: { timerCount1() { return this.timeSeconds < 10 ? "0" + this.timeSeconds : "" + this.timeSeconds; }, timerCount2() { return this.timeMinutes < 10 ? "0" + this.timeMinutes : "" + this.timeMinutes; } }, destroyed() { // 退出后清除计时器 if (this.timer) { clearInterval(this.timer); } }};.time { color: #f72a3a; font-weight: bold; font-size: 26px;}