<html> 
 
 <head> 
 
 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
 
 <title>测试UL</title> 
 
 <script language="javascript" src="js/jquery-1.5.1.js"></script> 
 
 <script language="javascript"> 
 
 $(document).ready(function(){ 
 
     //alert("出现提示"); 
 
  //隐藏 class ="a01"的UL下的所有的LI 
 
  //$("ul.a01 >li ").hide("slow"); 
 
   
 
  //点击class=01的BUTTON 隐藏class=a01的LI 
 
  $("button.01").click(function(){ 
 
     $("ul.a01 >li ").hide("slow"); 
 
  }); 
 
     //显出出来 
 
     $("button.02").click(function(){ 
 
     $("ul.a01 >li ").show("slow"); 
 
  }); 
 
 }); 
 
 </script> 
 
 </head> 
 
 <body> 
 
   <ul class="a01"> 
 
     <li>123123</li> 
 
     <li>432434</li> 
 
     <li>656546</li> 
 
     <li>444335</li> 
 
   </ul> 
 
     <ul class="a02"> 
 
     <li>123123</li> 
 
     <li>432434</li> 
 
     <li>656546</li> 
 
     <li>444335</li> 
 
   </ul> 
 
   
 
 <button class="01">隐藏</button> 
 
 <button class="02">显示</button> 
 
 </body> 
 
 </html>