js 倒计时

陈谏辉 · 发表于 2013-2-7 18:37:24

倒计时一：
<script language="javascript" type="text/javascript">
var interval = 1000;
function ShowCountDown(year,month,day,hour1,minute1,divname)
{
var now = new Date();
var endDate = new Date(year, month-1, day,hour1,minute1);
var leftTime=endDate.getTime()-now.getTime();
var leftsecond = parseInt(leftTime/1000);
//var day1=parseInt(leftsecond/(24*60*60*6));
var day1=Math.floor(leftsecond/(60*60*24));
var hour=Math.floor((leftsecond-day1*24*60*60)/3600);
var minute=Math.floor((leftsecond-day1*24*60*60-hour*3600)/60);
var second=Math.floor(leftsecond-day1*24*60*60-hour*3600-minute*60);

var cc = document.getElementById(divname);
cc.innerHTML = "距离"+year+"年"+month+"月"+day+"日还有："+day1+"天"+hour+"小时"+minute+"分"+second;
}
window.setInterval(function(){ShowCountDown(2010,1,12,15,0,'divdown1');}, interval);

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>倒计时</title>
</head>
<body><div id="divdown1"></div></body>
</html>
缺陷，js在客户端运行，var now = new Date();获取的是客户端时间，所以如果客户端时间不准确，将造成误差！
倒计时二：
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>
<div id="divdown1Id" style="color:red" mce_style="color:red"></div>
该倒计时不依赖客户端js获取当前日期，相对倒计时比较精确，只要用ajax从服务器端获取倒计剩余时间，再respose到客户端进行倒计，将较好的解决了时间不精确问题。
以上代码直接copy到html内即可运行

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js 倒计时

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