jquery批量控制form禁用的代码

<script type="text/javascript" src="jquery-1.8.2.min.js"></script> 
 <script type="text/javascript"> 
 $(document).ready(function(){ 
     $(".ddd input").attr("disabled","disabled"); 
     $(".ddd select").attr("disabled","disabled"); 
 }); 

 </script> 

 <div class="ddd"> 
 <input type="text" disabled> 
 <input type="text"> 
 <input type="text"> 
 <input type="text"> 
 <select name="ddlsex" id="ddlsex" runat="server"> 
               <option value="">--请选择--</option> 
               <option value="m" selected
               <option value="f">女</option> 
             </select> 
 </div>