<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <title></title> <style type="text/css"> body { font: normal 12px/17px Arial; } div { padding: 2px; } input, textarea { width: 12em; border: 1px solid #888; } .focus { border: 1px solid #f00; background: #fcc; } </style> <script src="jquery-1.7.1.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { $("input").focus(function () { $(this).addClass("focus"); }).blur(function () { $(this).removeClass("focus"); }); }); </script> </head> <body> <form id="form1" runat="server"> <fieldset> <legend>个人基本信息</legend> <div> <label for="username"> 名称:</label> <input id="username" type="text" /> </div> <div> <label for="pass"> 密码:</label> <input id="pass" type="password" /> </div> <div> <label for="msg"> 详细信息:</label> <textarea id="msg" rows="2" cols="20"></textarea> </div> </fieldset> </form> </body> </html>