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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>考试时间</title>
<link rel="stylesheet" href="style.css" />
</head>
<script language="javascript" type="text/javascript">
window.onload = function(){
var timedate= new Date(2016,11,12,6,5,7); //自定义结束时间
var now = new Date() ; //获取当前时间
var date = timedate.getTime() - now.getTime(); //得出的为毫秒
var time = Math.ceil(parseInt(date)/(1000 * 60 * 60 * 24 )) ; //1000 * 60 * 60 * 24一天的秒数
if(time > 0 ){
document.getElementById(‘timeShow‘).innerHTML = time;
}
}
</script>
</head>
<body>
<div class="content2">
<div class="txtshow">距离设置时间还有<span id="timeShow"></span>天</div>
</div>
</body>
</html>
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原文地址：http://www.cnblogs.com/zhzheng/p/5827334.html
