1 <!doctype html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 <style type="text/css"> 7 h1{ 8 font-size: 50px; 9 text-align: center; 10 } 11 </style> 12 </head> 13 <body> 14 <h1>倒计时：<span>10</span></h1> 15 <script type="text/javascript" src = "http://libs.baidu.com/jquery/1.10.0/jquery.min.js"></script> 16 <script type="text/javascript"> 17 $(document).ready(function(){ 18 var e = $("h1 span").first(); 19 var i = 9; 20 var interval = setInterval(function(){ 21 e.html(i); 22 i--; 23 if(i <= 0){ 24 clearInterval(interval); 25 } 26 },1000); 27 }) 28 </script> 29 </body> 30 </html>
原文：http://www.cnblogs.com/sxmcACM/p/4096071.html
