为什么直接显示的是”团购已结束“，而不是倒计时呢？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>团购——限时抢</title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div class="content3">
<div class="time">还剩 <span id="LeftTime"></span></div>
</div>
<script>
function FreshTime()
{
var endtime=new Date("2016/5/15,12:20:12");//结束时间
var nowtime = new Date();//当前时间
var lefttime= parseInt((endtime.getDate()-nowtime.getDate())/1000);
d= parseInt(lefttime/(60*60*24)) ;
h= parseInt(lefttime/(60*60)%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>
</body>
</html>
