Twitter bootstrap 3 Bootrstap 3-具有手风琴功能的列表组

尽管这两个

都获得了

数据父项=“#菜单”

，但它们的出现都不会触发其他项的隐藏。如何更新此代码以在另一个子链接可见时隐藏其中一个子链接？

菜单必须是

列表组

的父级，并且列表组需要有

面板

类

 <div class="list-group" id="menu">
 <a href="#" class="list-group-item" data-toggle="collapse" data-target="#sm" data-parent="#menu">MESSAGES <span class="label label-info">5</span> <span class="glyphicon glyphicon-envelope pull-right"></span></a>
 <div id="sm" class="sublinks collapse">
  <a class="list-group-item small"><span class="glyphicon glyphicon-chevron-right"></span> inbox</a>
  <a class="list-group-item small"><span class="glyphicon glyphicon-chevron-right"></span> sent</a>
 </div>
 <a href="#" class="list-group-item" data-toggle="collapse" data-target="#sl" data-parent="#menu">TASKS <span class="glyphicon glyphicon-tag pull-right"></span></a>
 <div id="sl" class="sublinks collapse">
  <a class="list-group-item small"><span class="glyphicon glyphicon-chevron-right"></span> saved tasks</a>
  <a class="list-group-item small"><span class="glyphicon glyphicon-chevron-right"></span> add new task</a>
 </div>
 <a href="#" class="list-group-item">ANOTHER LINK ...<span class="glyphicon glyphicon-stats pull-right"></span></a>
</div>