商城倒计时JS怎么做
<style type="text/css"> ??????div { ???????text-align: center; ???????color:#333; ???????font-size: 36px; ??????} ???</style></head><body> ???<div>距离2019年春节还有：<span>0</span>天<span>0</span>时<span>0</span>分<span>0</span>秒</div> ???<script type="text/javascript"> ????????var spans = document.getElementsByTagName("span"); ???????// 距离春节多少天多少时多少分多少秒 ???????var end = new Date("2019-2-5"); ???????????// 开启定时器 ???????setInterval(function(){ ???????????var now=new Date(); ???????????// alert(now); ???????????_ss=parseInt(diff(now,end)); ???????????// alert(_ss); ???????????_d=parseInt(_ss/(24*3600)); ???????????// alert(_d);( ???????????_h=parseInt(_ss%(24*3600)/3600); ???????????// alert(_h); ???????????_m=parseInt(_ss%3600/60); ???????????// alert(_m); ???????????_s=parseInt(_ss%60); ???????????// alert(_s); ??????????spans[0].innerHTML=toTwo(_d); ??????????spans[1].innerHTML=toTwo(_h); ??????????spans[2].innerHTML=toTwo(_m); ??????????spans[3].innerHTML=toTwo(_s); ???????},1000) ???????function diff(start,end){ ???????????return (end.getTime()-start.getTime())/1000 ???????} ???????function toTwo(num){ ???????????return num<10?"0"+num:num ???????} ???</script>商城倒计时JS怎么做
原文地址：https://www.cnblogs.com/lxystar/p/9970736.html