<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Untitled Document</title>
<style>
#redate{width:400px;height:100px;margin:0 auto;text-align:center;line-height:100px;font-size:40px;}
</style>
<script>
var timer;
function run(){
var oP=document.getElementById('redate');
var iNow = new Date();
var iNew = new Date('Aug 29,2021 17:58:40')
var t=Math.floor((iNew.getTime()-iNow.getTime())/1000); //相隔秒数
var day=Math.floor(t/(24*60*60));
var hour=Math.floor(t/(60*60)%24);
var minute=Math.floor(t/60%60);
var sec=t%60;
var ltime=(iNew.getTime()-iNow.getTime())%1000;
hour=checkNum(hour);
minute=checkNum(minute);
ltime=checkNum(ltime);
sec=checkNum(sec);
oP.innerHTML='距离抢购还有：<br/>'+day+'天'+hour+'时'+minute+'分'+sec+'秒'+ltime;
if((iNew-iNow)<=0){clearTimeout(timer);
oP.innerHTML='抢购开始！';}
timer=setTimeout(run, 10);}function checkNum(num){if(num<10){
num='0'+num;}
return num;}window.οnlοad=function(){run();}
</script>
</head>
<body>
<p id="redate"></p>
</body>
</html>
