基于jQuery实现下拉收缩（展开与折叠）特效

<！DOCTYPE html> <head> <meta charset="UTF-8" /> <title>jQuery下拉收缩特效</title> <script type="text/javascript" src="http://demo.jb51.net/jslib/jquery/jquery1.3.2.js"></script> <script type="text/javascript"> $（document）.ready（function（）{ $（".btn-slide"）.click（function（）{ $（"#panel"）.slideToggle（"slow"）; $（this）.toggleClass（"active"）; return false; }）; }）; </script> <style type="text/css"> body { margin: 0 auto; padding: 0; width: 570px; font: 75%/120% Arial, Helvetica, sans-serif; } a:focus { outline: none; } #panel { background: #69C7F7; height: 200px; display: none; } .slide { margin: 0; padding: 0; border-top: solid 4px #F27613; } .btn-slide { background: #F27613 url（http://files.jb51.net/file_images/article/201212/20121225165932118.gif） no-repeat right -50px;; text-align: center; width: 144px; height: 31px; padding: 10px 10px 0 0; margin: 0 auto; display: block; font: bold 120%/100% Arial, Helvetica, sans-serif; color: #fff; text-decoration: none; } .active { background-position: right 12px; } </style> </head> <body> <h1>演示不了 请刷新下</h1><p class="slide">点击试试<br/> </body> </html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]