jQuery倒计时实例
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>倒计时测试</title>
<script src="http://www.codefans.net/ajaxjs/jquery-1.6.2.min.js" type="text/javascript"></script>
<script>
function lxfEndtime(){
$(".lxftime").each(function(){
var lxfday=$(this).attr("lxfday");//用来判断是否显示天数的变量
var endtime = new Date($(this).attr("endtime")).getTime();//取结束日期(毫秒值)
var nowtime = new Date().getTime(); //今天的日期(毫秒值)
var youtime = endtime-nowtime;//还有多久(毫秒值)
var seconds = youtime/1000;
var minutes = Math.floor(seconds/60);
var hours = Math.floor(minutes/60);
var days = Math.floor(hours/24);
var CDay= days ;
var CHour= hours % 24;
var CMinute= minutes % 60;
var CSecond= Math.floor(seconds%60);//"%"是取余运算，可以理解为60进一后取余数，然后只要余数。
if(endtime<=nowtime){
$(this).html("已过期")//如果结束日期小于当前日期就提示过期啦
}else{
if($(this).attr("lxfday")=="no"){
$(this).html("<i>剩余时间：</i><span>"+CHour+"</span>时<span>"+CMinute+"</span>分<span>"+CSecond+"</span>秒"); //输出没有天数的数据
}else{
$(this).html("<i>剩余时间：</i><span>"+days+"</span><em>天</em><span>"+CHour+"</span><em>时</em><span>"+CMinute+"</span><em>分</em><span>"+CSecond+"</span><em>秒</em>"); //输出有天数的数据
}
}
});
setTimeout("lxfEndtime()",1000);
};
$(function(){
lxfEndtime();
});
</script>
<style type="text/css">
*{
font-style: normal;
font-weight: normal;}
.haveday {
padding: 20px;
border: 1px dashed #000;
margin-right: auto;
margin-left: auto;
width: 300px;
}
</style>
</head>
<body>
<div class="haveday">
<h1>含有天数的倒计时</h1>
<div class="lxftime" endtime="11/15/2017 17:24:0"></div>
<div class="lxftime" endtime="11/8/2017 3:3:20"></div>
<div class="lxftime" endtime="9/6/2017 6:1:0"></div>
<div class="lxftime" endtime="6/6/2017 9:3:5"></div>
</div>
<p></p>
<div class="haveday">
<h1>没有天数的倒计时</h1>
<div class="lxftime" endtime="11/15/2017 17:24:0" lxfday="no"></div>
<div class="lxftime" endtime="11/8/2017 3:3:20" lxfday="no"></div>
<div class="lxftime" endtime="9/6/2017 6:1:0" lxfday="no"></div>
<div class="lxftime" endtime="6/6/2017 9:3:5" lxfday="no"></div>
</div>
</body>
</html>