Jq-onfocus,onblur

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><br /><style> .b{border:1px solid #fc0;background:#FFFFF7;} input,textarea{border:1px solid #92B0DD;background:#FAFCFD;} label{float:left;width:90px;padding-right:5px;text-align:right;overflow:hidden;} </style><p><label for="username">name: </label><input type="text" name="" id="username"><br /><label for="password">password: </label><input type="password" name="" id="password"><br /><label for="textarea">textarea:</label> <textarea name="" id="textarea" cols="30" rows="10">

運行代碼