用vue+js做一个简单的countdown倒计时

countdown.vue

<template>

    <div class="container">
     
      <h2>This is a simple countdown timer!</h2>
      
      <br />
      <h6>
        We will redirect you back to home page in
        <span id="demo"></span> or you can click
        <router-link to="/">
          <span class="text-primary">here</span>
        </router-link>
      </h6>
    
    </div>

</template>

先把html搞一下设置一个span， id是demo

import { setTimeout } from "timers";
export default {
  methods: {
    redirect: function() {
      setTimeout(() => {
        this.$router.push("/");
      }, 6000);
    }
  },
  created() {
    this.redirect();
  
    var timeleft = 5;
    var countTimer = setInterval(function() {
      document.getElementById("demo").innerHTML =
        timeleft + 's';
      timeleft -= 1;
      if (timeleft <= 0) {
        clearInterval(countTimer);
        document.getElementById("demo").innerHTML = "1s";
      }
    }, 1000);
  }
  }