2 simple js countdown implementation methods

This article mainly introduces two simple js countdown methods in detail. One is the countdown with days, and the other is the simple countdown in minutes and seconds. It has certain reference value. Interested friends can refer to it. I hope it can Help everyone.

Generally, the countdown time is transmitted from the background and then rendered to the page. Here are 2 simple countdown methods

//带天数的倒计时
function countDown(times){
  var timer=null;
  timer=setInterval(function(){
    var day=0,
      hour=0,
      minute=0,
      second=0;//时间默认值
    if(times > 0){
      day = Math.floor(times / (60 * 60 * 24));
      hour = Math.floor(times / (60 * 60)) - (day * 24);
      minute = Math.floor(times / 60) - (day * 24 * 60) - (hour * 60);
      second = Math.floor(times) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);
    }
    if (day <= 9) day = &#39;0&#39; + day;
    if (hour <= 9) hour = &#39;0&#39; + hour;
    if (minute <= 9) minute = &#39;0&#39; + minute;
    if (second <= 9) second = &#39;0&#39; + second;
    //
    console.log(day+"天:"+hour+"小时："+minute+"分钟："+second+"秒");
    times--;
  },1000);
  if(times<=0){
    clearInterval(timer);
  }
}

//单纯分钟和秒倒计时
function resetTime(time){
  var timer=null;
  var t=time;
  var m=0;
  var s=0;
  m=Math.floor(t/60%60);
  m<10&&(m=&#39;0&#39;+m);
  s=Math.floor(t%60);
  function countDown(){
   s--;
   s<10&&(s=&#39;0&#39;+s);
   if(s.length>=3){
    s=59;
    m="0"+(Number(m)-1);
   }
   if(m.length>=3){
    m=&#39;00&#39;;
    s=&#39;00&#39;;
    clearInterval(timer);
   }
   console.log(m+"分钟"+s+"秒");
  }
  timer=setInterval(countDown,1000);
}

How to use

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