网页实时倒计时，精确到秒级，和天数倒计时原理一样,需要的朋友可以参考下
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="https://www.jb51.net/article/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>'+_day+'</span>天<span>'+_hours+'</span>小时<span>'+_minutes+'</span>分<span>'+_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>
<div>小伙伴们距离情人节只剩：</div>
<input type="hidden" value="<?php echo $b; ?>" />
<p><span>0</span>天<span>0</span>小时<span>0</span>分<span>0</span>秒</p>
</div>
</body>
</html>
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