js網頁即時倒計時精確到秒級

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 網頁即時倒計時,精確到秒級,和天數倒計時原理一樣,需要的朋友可以參考下

一個很好用的js倒計時!網頁即時倒計時,精確到秒級,和天數倒計時原理一樣。js倒計時一般用於商城網站團購,特賣,很多地方都可用到!希望能夠給大家帶來協助!  效果如下:  代碼如下:<!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-倒計時</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>小時<span class="minutes">'+_minutes+'</span>分<span class="seconds">'+_seconds+'</span>秒'; var _str = '倒計時:'+_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">小夥伴們距離情人節只剩:</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>小時<span class="minutes">0</span>分<span class="seconds">0</span>秒</p> </div> </body> </html>  
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