Twitter bootstrap 引导-导航+；子导航在单击时显示和隐藏

我试图使导航，将有类似的效果下拉菜单，但不是框与子菜单，它会显示标签。我做的很好，它工作得很好-我唯一的问题是，当我点击按钮时，子菜单会显示出来（这很好），但当我再次点击它时，它不会关闭。所以我想做的是：点击按钮-子菜单显示-再次点击相同的按钮，子菜单隐藏

<!-- Navigation bar -->
        <div class="container-narrow">
          <ul class="nav nav-pills nav-main">
            <li class="nav-size active"><a href="index.php">Home</a></li>
            <li class="nav-size"><a href="#tab1" data-toggle="tab">About</a></li>
            <li class="nav-size"><a href="#">Services</a></li>
            <li class="nav-size"><a href="#">Downloads</a></li>
                <li class="pull-right"><a href="#tab2" data-toggle="tab"><img src="img/flags/flags12.png" alt="flags" /></a></li>
                <li class="pull-right"><a href="#">Register</a></li>
                <li class="pull-right"><a href="#">Login</a></li>
          </ul>

                    <div class="tab-content">
                        <div class="tab-pane" id="tab1">
                            <ul class="nav nav-tabs nav-sub">
                                <li><a href="#">Services</a></li>
                                <li><a href="#">Site Services</a></li>
                                <li><a href="#">O'Leary Group</a></li>
                            </ul>
                        </div>
                    </div>

                    <div class="tab-content">
                        <div class="tab-pane" id="tab2">
                            <ul class="nav nav-tabs nav-sub">
                                <li class="pull-right"><a href="#"><img src="img/flags/en.png" /> English</a></li>
                                <li class="pull-right"><a href="#"><img src="img/flags/fr.png" /> French</a></a></li>
                                <li class="pull-right"><a href="#"><img src="img/flags/de.png" /> German</a></a></li>
                                <li class="pull-right"><a href="#"><img src="img/flags/pl.png" /> Polish</a></a></li>
                            </ul>
                        </div>
                    </div>
      </div><!-- / Navigation bar -->

可能值得调查这一问题。您可以通过执行以下操作使其工作

<!-- Navigation bar -->
<div class="container-narrow">
    <ul class="nav nav-pills nav-main">
        <li class="nav-size active"><a href="index.php">Home</a></li>
        <li class="nav-size"><a href="#tab1" data-toggle="collapse" data-target="#tab1">About</a></li>
        <li class="nav-size"><a href="#">Services</a></li>
        <li class="nav-size"><a href="#">Downloads</a></li>
        <li class="pull-right"><a href="#tab2" data-toggle="tab"><img src="img/flags/flags12.png" alt="flags" /></a></li>
        <li class="pull-right"><a href="#">Register</a></li>
        <li class="pull-right"><a href="#">Login</a></li>
    </ul>

    <div class="collapse" id="tab1">
        <div class="tab-pane" >
            <ul class="nav nav-tabs nav-sub">
                <li><a href="#">Services</a></li>
                <li><a href="#">Site Services</a></li>
                <li><a href="#">O'Leary Group</a></li>
            </ul>
        </div>
    </div>

    <div class="tab-content">
        <div class="tab-pane" id="tab2">
            <ul class="nav nav-tabs nav-sub">
                <li class="pull-right"><a href="#"><img src="img/flags/en.png" /> English</a></li>
                <li class="pull-right"><a href="#"><img src="img/flags/fr.png" /> French</a></a></li>
            <li class="pull-right"><a href="#"><img src="img/flags/de.png" /> German</a></a></li>
        <li class="pull-right"><a href="#"><img src="img/flags/pl.png" /> Polish</a></a></li>
</ul>
</div>
</div>
</div><!-- / Navigation bar -->

这并不完美，但似乎选项卡不会呈现您需要的OOTB行为