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倒计时部分代码：
<script>
function FreshTime()
{
var endtime=new Date("2016/10/15,12:20:12");//结束时间
var nowtime = new Date();//当前时间
var lefttime=parseInt((endtime.getTime()-nowtime.getTime())/1000);
d=parseInt(lefttime/3600/24);
h=parseInt((lefttime/3600)%24);
m=parseInt((lefttime/60)%60);
s=parseInt(lefttime%60);
document.getElementById("LeftTime").innerHTML=d+"天"+h+"小时"+m+"分"+s+"秒";
if(lefttime<=0){
document.getElementById("LeftTime").innerHTML="团购已结束";
clearInterval(sh);
}
}
FreshTime()
var sh;
sh=setInterval(FreshTime,1000);
</script>
当前时间获取：
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>当前系统时间</title>
<link rel="stylesheet" href="style.css" />
<script language="javascript" type="text/javascript">
window.onload = function(){
showTime();
}
function checkTime(i){ //补位处理
if(i<10){
i="0"+i;
}
return i;
}
function showTime(){
var mydate=new Date();
var year=mydate.getFullYear();
var month=mydate.getMonth()+1 ;
var day=mydate.getDate();
var h=mydate.getHours();
var m=mydate.getMinutes();
var s=mydate.getSeconds()
;
m=checkTime(m);
s=checkTime(s);
var weekday=new Array(7)
weekday[0]="星期日"
weekday[1]="星期一"
weekday[2]="星期二"
weekday[3]="星期三"
weekday[4]="星期四"
weekday[5]="星期五"
weekday[6]="星期六"
document.getElementById("show").innerHTML=""+year+"年"+month+"月"+day+"日 "+ weekday[mydate.getDay()] +h+":"+m+":"+s;
t=setTimeout(‘showTime()‘,500);
}
</script>
</head>
<body>
<div class="content1">
<div id="show">显示时间的位置</div>
</div>
</body>
</html>
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原文地址：http://www.cnblogs.com/td-tkzc/p/5796187.html
