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一个很好用的js倒计时!网页实时倒计时,精确到秒级,和天数倒计时原理一样。js倒计时一般用于商城网站团购,特卖,很多地方都可用到!希望能够给大家带来帮助!

效果如下:
 
复制代码 代码如下:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
.leave_time_font{margin-left:35%;}
#fo{margin-left:32%;}
</style>
<title>WoYaoNi.CN-倒计时</title>
</head>
<body>
<h1>WoYaoNi.CN </h1>
<script src="./jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(e) {
var _countSeconds = 0;
function _countDown(){
_countSeconds ++;
$("input.surplustime").each(function(index, element) {
var $this = $(this);
var _totalTime = Number($this.val()) - _countSeconds;
var _day = parseInt(_totalTime/86400);
var _hours = parseInt(_totalTime%86400/3600);
var _minutes = parseInt(_totalTime%86400%3600/60);
var _seconds = parseInt(_totalTime%86400%3600%60);
var _strLite = "<span class="day">"+_day+"</span>天<span class="hour">"+_hours+"</span>小时<span class="minutes">"+_minutes+"</span>分<span class="seconds">"+_seconds+"</span>秒";
var _str = "倒计时:"+_strLite;
if($this.next("p.daojishi").length > 0){
$this.next("p.daojishi").html(_str);
}else if($this.next("p.leave_time_font").length > 0){
$this.next("p.leave_time_font").html(_strLite);
}
});
}
setInterval(_countDown, 1000);
})
</script>
</head>
<body>
<?php
ini_set("date.timezone","Asia/Shanghai");
$currenttime = time();
$a = strtotime("2014-2-14 00:00");
$b = $a-$currenttime;
?>

<div id="djs">
<div id="fo">小伙伴们距离情人节只剩:</div>
<input type="hidden" name="surplustime" class="surplustime" value="<?php echo $b; ?>" />
<p class="leave_time_font"><span class="day">0</span>天<span class="hour">0</span>小时<span class="minutes">0</span>分<span class="seconds">0</span>秒</p>
</div>
</body>
</html>