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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>活动倒计时代码</title>
</head>
<body>
<script type="text/javascript" src="http://libs.useso.com/js/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
$.extend($.fn,{
fnTimeCountDown:function(d){
this.each(function(){
var $this = $(this);
var o = {
hm: $this.find(".hm"),
sec: $this.find(".sec"),
mini: $this.find(".mini"),
hour: $this.find(".hour"),
day: $this.find(".day"),
month:$this.find(".month"),
year: $this.find(".year")
};
var f = {
haomiao: function(n){
if(n < 10)return "00" + n.toString();
if(n < 100)return "0" + n.toString();
return n.toString();
},
zero: function(n){
var _n = parseInt(n, 10);//解析字符串,返回整数
if(_n > 0){
if(_n <= 9){
_n = "0" + _n
}
return String(_n);
}else{
return "00";
}
},
dv: function(){
//d = d || Date.UTC(2050, 0, 1); //如果未定义时间，则我们设定倒计时日期是2050年1月1日
var _d = $this.data("end") || d;
var now = new Date(),
endDate = new Date(_d);
//现在将来秒差值
//alert(future.getTimezoneOffset());
var dur = (endDate - now.getTime()) / 1000 , mss = endDate - now.getTime() ,pms = {
hm:"000",
sec: "00",
mini: "00",
hour: "00",
day: "00",
month: "00",
year: "0"
};
if(mss > 0){
pms.hm = f.haomiao(mss % 1000);
pms.sec = f.zero(dur % 60);
pms.mini = Math.floor((dur / 60)) > 0? f.zero(Math.floor((dur / 60)) % 60) : "00";
pms.hour = Math.floor((dur / 3600)) > 0? f.zero(Math.floor((dur / 3600)) % 24) : "00";
pms.day = Math.floor((dur / 86400)) > 0? f.zero(Math.floor((dur / 86400)) % 30) : "00";
//月份，以实际平均每月秒数计算
pms.month = Math.floor((dur / 2629744)) > 0? f.zero(Math.floor((dur / 2629744)) % 12) : "00";
//年份，按按回归年365天5时48分46秒算
pms.year = Math.floor((dur / 31556926)) > 0? Math.floor((dur / 31556926)) : "0";
}else{
pms.year=pms.month=pms.day=pms.hour=pms.mini=pms.sec="00";
pms.hm = "000";
//alert(‘结束了‘);
return;
}
return pms;
},
ui: function(){
if(o.hm){
o.hm.html(f.dv().hm);
}
if(o.sec){
o.sec.html(f.dv().sec);
}
if(o.mini){
o.mini.html(f.dv().mini);
}
if(o.hour){
o.hour.html(f.dv().hour);
}
if(o.day){
o.day.html(f.dv().day);
}
if(o.month){
o.month.html(f.dv().month);
}
if(o.year){
o.year.html(f.dv().year);
}
setTimeout(f.ui, 1);
}
};
f.ui();
});
}
});
</script>
<div style="padding: 50px;">活动倒计时代码（精确到毫秒）</div>
<div style="background:rgb(183,17,41); WIDTH: 100%; color:#fff;FONT-FAMILY: arial; TEXT-ALIGN: center;">
<P style="font-size:.8em;line-height:2em;">距活动结束还有：</P>
<div id="fnTimeCountDown" data-end="2018/07/08 18:45:13">
<span class="year">00</span>年
<span class="month">00</span>月
<span class="day">00</span>天
<span class="hour">00</span>时
<span class="mini">00</span>分
<span class="sec">00</span>秒
<span class="hm">000</span>
</div>
</div>
<script type="text/javascript">
$("#fnTimeCountDown").fnTimeCountDown("2018/07/08 18:45:13");
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/jiangwenli/p/4870413.html
