jquery - Multi-level tab Panel with Bootstrap - adding class .active 2 first-subpanel -

i making multi-level panel page, based on bootstrap. structure fine, sub-panels active when parent panel active too.

my code looks :

<!-- nav tabs n1-->             <div class="row">                <div class="col.......">                   <ul class="nav nav-tabs">                      <li class="active"><a href="#1a" data-toggle="tab">a</a></li>                        <li><a href="#1b" data-toggle="tab">b</a></li>                   </ul>                </div>             </div> <!-- /.nav tabs n1-->  <!-- content n1 --> <div class="tab-content">      <!-- tab content n1a -->     <div class="tab-pane fade active in" id="1a">     <div class="row">         <div class="col....">          <!-- nav tabs n2 -->         <div class="row">            <div class="col.......">               <ul class="nav nav-tabs">                  <li class="active"><a href="#1aa" data-toggle="tab">a1</a></li>                    <li><a href="#1ab" data-toggle="tab">a2</a></li>               </ul>            </div>         </div>         <!-- /.nav tabs n2 -->          <!-- content n2 -->         <div class="tab-content">             <!-- tab content n21 -->             <div class="tab-pane fade active in" id="1aa">                <h1>a1</h1>                <p>......</p>             </div>             <!-- tab content n21 -->             <div class="tab-pane fade" id="1ab">                <h1>a2</h1>                <p>......</p>             </div>         </div>         <!-- ./content n2 -->      </div>     </div>     <!-- /.tab content n1a -->      <!-- tab content n1b -->     <div class="tab-pane fade" id="1b">     <div class="row">         <div class="col....">          <!-- nav tabs n2 -->         <div class="row">            <div class="col.......">               <ul class="nav nav-tabs">                  <li class="active"><a href="#1ba" data-toggle="tab">a1</a></li>                    <li><a href="#1bb" data-toggle="tab">a2</a></li>               </ul>            </div>         </div>         <!-- /.nav tabs n2 -->          <!-- content n2 -->         <div class="tab-content">             <!-- tab content n21 -->             <div class="tab-pane fade" id="1ba">                <h1>a1</h1>                <p>......</p>             </div>             <!-- tab content n21 -->             <div class="tab-pane fade" id="1bb">                <h1>a2</h1>                <p>......</p>             </div>         </div>         <!-- ./content n2 -->      </div>     </div>     <!-- /.tab content n1b -->  </div> <!-- ./content n1 --> 

i trigger first sub-panel when parent-panel getting active, after clicking on it. tried piece of jquery, not @ not work :

$( "#1b" ).click(function () {             ( "#1ba" ).addclass('in active');            }); 

any idea ?

i have that, perhaps you. if still needs, of course hehehe

function getrootchild(element, childs) {      childs.push(element);      if (element.next('li.child').length > 0) {           getrootchild(element.next('li.child'), childs);      }  }    $("li.list-group-item.root").on('click', function() {      var childs = [];        getrootchild($(this).next('li.child'), childs);        for(idx in childs) {          $(childs[idx]).slidetoggle();      }  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>  <li class="list-group-item root">    <a href="#">      root item    </a>  </li>  <li class="list-group-item child" style="display: none;">    <a href="#">      child 1    </a>  </li>  <li class="list-group-item child" style="display: none;">    <a href="#">      child 2    </a>  </li>