1、声明定时器变量

countDown: 120,
countDownTimer: null,

2、倒计时函数

    // 倒计时countDownFun() {this.countDownTimer = setInterval(() => {this.countDown -= 1;if (this.countDown <= 0) {clearInterval(this.countDownTimer);this.countDownTimer = null;localStorage.clear();sessionStorage.clear();this.$router.push('/zhuhaiHome');}}, 1000);},

3、生命周期挂载倒计时方法

  created() {this.countDownFun();},mounted() {// 监听全局点击事件 点击后重新计算倒计时const that = this;document.body.onclick = function () {clearInterval(that.countDownTimer);that.countDown = 120;that.countDownFun();};},

4、离开页面前清除定时器

  beforeDestroy() {if (this.countDownTimer) {clearInterval(this.countDownTimer);this.countDownTimer = null;}},