一个不错的js html页面倒计时可精确到秒,很简单,但和实用
<!doctype html>
<html>
<head>
<meta charset=\"utf-8\">
</head>
<body>
<DIV id=\"CountMsg\" class=\"HotDate\">
<span id=\"t_d\">00天</span>
<span id=\"t_h\">00时</span>
<span id=\"t_m\">00分</span>
<span id=\"t_s\">00秒</span>
</DIV>
<script type=\"text/javascript\">
function getRTime(){
var EndTime= new Date(\'2014/10/23 10:00:00\'); //截止时间
var NowTime = new Date();
var t =EndTime.getTime() - NowTime.getTime();
/*var d=Math.floor(t/1000/60/60/24);
t-=d*(1000*60*60*24);
var h=Math.floor(t/1000/60/60);
t-=h*60*60*1000;
var m=Math.floor(t/1000/60);
t-=m*60*1000;
var s=Math.floor(t/1000);*/
var d=Math.floor(t/1000/60/60/24);
var h=Math.floor(t/1000/60/60%24);
var m=Math.floor(t/1000/60%60);
var s=Math.floor(t/1000%60);
document.getElementById(\"t_d\").innerHTML = d + \"天\";
document.getElementById(\"t_h\").innerHTML = h + \"时\";
document.getElementById(\"t_m\").innerHTML = m + \"分\";
document.getElementById(\"t_s\").innerHTML = s + \"秒\";
}
setInterval(getRTime,1000);
</script>
</body>
</html>
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