内部をクリックしたときにブートストラップドロップダウンが閉じないようにするにはどうすればよいですか?

<code class="html"><ul class="nav navbar-nav">
  <li class="dropdown mega-dropdown">
    <a href="javascript:;" class="dropdown-toggle" data-toggle="dropdown">
      <i class="fa fa-list-alt"></i> Menu item 1
      <span class="fa fa-chevron-down pull-right"></span>
    </a>
    <ul class="dropdown-menu mega-dropdown-menu">
      <li>
        <div id="carousel" class="carousel slide" data-ride="carousel">
          <ol class="carousel-indicators">
            <li data-slide-to="0" data-target="#carousel"></li>
            <li class="active" data-slide-to="1" data-target="#carousel"></li>
          </ol>
          <div class="carousel-inner">
            <div class="item">
              <img alt="" class="img-rounded" src="img1.jpg">
            </div>
            <div class="item active">
              <img alt="" class="img-rounded" src="img2.jpg">
            </div>
          </div>
          <a data-slide="prev" role="button" href="#carousel" class="left carousel-control">
            <span class="glyphicon glyphicon-chevron-left"></span>
          </a>
          <a data-slide="next" role="button" href="#carousel" class="right carousel-control">
            <span class="glyphicon glyphicon-chevron-right"></span>
          </a>
        </div>
      </li>
    </ul>
  </li>
</ul></code>

<code class="js">$('ul.dropdown-menu.mega-dropdown-menu').on('click', function(event){
    // 不会向document 节点传播事件
    // 所以委托的事件不会被触发
    event.stopPropagation();
});</code>

<code class="js">$(document).on('click', 'someyourContainer .dropdown-menu', function (e) {
  e.stopPropagation();
});</code>