jquery控制页面的展开和隐藏实现方法(推荐)

<script> 
      require(["jquery","validate","bootstrap","lhgcalendar"],function($) { 
        $(function(){   
          $("form").validate(); 
        }); 
    
        $(".up").click(function(){ 
          $(this).parent().parent().parent().parent().next().slideToggle("slow"); 
        }); 
       }); 
 </script> 

<div class="panel panel-default"> 
<table class="table table-bordered"> 
  <thead> 
<tr class=" active" id="a3"> 
  <th width="15%" style="text-align:center;">加盟状态</th> 
  <th width="25%" style="text-align:center;">申请表名称</th> 
  <th width="25%" style="text-align:center;">审核情况</th> 
  <th width="25%" style="text-align:center;">操作</th> 
  <th width="10%" style="text-align:center;">隐藏/展开切换</th> 
</tr> 
  </thead> 
  <tbod> 
<tr style="text-align:center;" class=" active"> 
  <td><strong class="text-warning">第1步：<"#">《信息表》</a></td> 
  <td>-</td> 
  <td>-</td> 
  <td> 
<span class="up text-info" ><i class="glyphicon glyphicon-chevron-down"style="padding:0px 5px 0 5px;"></i></span> 
  </td> 
</tr> 
  </tbody> 
</table> 
<div class="panel-body" style="display:none;"> 
  <table class="table"> 
<tbody> 
  <tr> 
    <td>-</td>  
    <td>-</td><pre name="code" class="html">    <td>-</td>  
  </tr>  
</tbody>  
  </table> 
</div>  
</div>