倒计时

 

  <script>
    // 开启定时器
    setInterval(conuntDown, 1000); //每隔一秒刷新一次

    function conuntDown(time) {
      var nowTime = +new Date(); //  返回的是当前时间总的毫秒数
      var inputTime = +new Date(time)
      var times = (inputTime - nowTime) / 1000; //time是剩余时间总的秒数
      var h = parseInt((times / 60 / 60) % 24);
      h = h < 10 ? "0" + h : h;
      var m = parseInt((times / 60) % 60);
      m = m < 10 ? "0" + m : m;
      var s = parseInt(times % 60);
      s = s < 10 ? "0" + s : s;
      return  h +'时'+ m+'分' + s+'秒'
    }
    console.log(conuntDown('2023-2-8 10:40:00'));
    var date =new Date()
    console.log(date);
  </script>