/*
时间倒计时插件
TimeDown.js
*/
function TimeDown(id, endDateStr) {
//结束时间
var endDate = new Date(endDateStr);
//当前时间
var nowDate = new Date();
//相差的总秒数
var totalSeconds = parseInt((endDate - nowDate) / 1000);
//天数
var days = Math.floor(totalSeconds / (60 * 60 * 24));
//取模（余数）
var modulo = totalSeconds % (60 * 60 * 24);
//小时数
var hours = Math.floor(modulo / (60 * 60));
modulo = modulo % (60 * 60);
//分钟
var minutes = Math.floor(modulo / 60);
//秒
var seconds = modulo % 60;
//输出到页面
document.getElementById(id).innerHTML = "还剩:" + days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒";
//延迟一秒执行自己
setTimeout(function () {
TimeDown(id, endDateStr);
}, 1000)
}
-----------------------------------------------------------------------------
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>时间倒计时</title>
<script src="TimeDown.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div id="show">
</div>
<script type="text/javascript">
TimeDown("show", "2013-11-25 8:00:45");
</script>
</form>
</body>
</html>