<html lang="en"><head> <meta charset="utf-8"> <title>.show() 演示</title> <link rel="stylesheet" href="//apps.bdimg.com/libs/jqueryui/1.10.4/css/jquery-ui.min.css"> <style> div { display: none; width: 100px; height: 100px; background: #ccc; border: 1px solid #000; } </style> <script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script> <script src="//apps.bdimg.com/libs/jqueryui/1.10.4/jquery-ui.min.js"></script></head><body> <button>显示 div</button><div></div> <script>$( "button" ).click(function() { $( "div" ).show( "fold", 1000 );});</script> </body></html>