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<div class="bs-docs-section">
<h1 id="dropdowns" class="page-header">Dropdowns <small>dropdown.js</small></h1>
<h2 id="dropdowns-examples">Examples</h2>
<p>Add dropdown menus to nearly anything with this simple plugin, including the navbar, tabs, and pills.</p>
<h3>Within a navbar</h3>
<div class="bs-example">
<nav id="navbar-example" class="navbar navbar-default navbar-static" role="navigation">
<div class="container-fluid">
<div class="navbar-header">
<button class="navbar-toggle" type="button" data-toggle="collapse" data-target=".bs-example-js-navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Project Name</a>
</div>
<div class="collapse navbar-collapse bs-example-js-navbar-collapse">
<ul class="nav navbar-nav">
<li class="dropdown">
<a id="drop1" href="#" role="button" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="drop1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" id="drop2" role="button" class="dropdown-toggle" data-toggle="dropdown">Dropdown 2 <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="drop2">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li id="fat-menu" class="dropdown">
<a href="#" id="drop3" role="button" class="dropdown-toggle" data-toggle="dropdown">Dropdown 3 <span class="caret"></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="drop3">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
</ul>
</div><!-- /.nav-collapse -->
</div><!-- /.container-fluid -->
</nav> <!-- /navbar-example -->
</div> <!-- /example -->
<h3>Within pills</h3>
<div class="bs-example">
<ul class="nav nav-pills">
<li class="active"><a href="#">Regular link</a></li>
<li class="dropdown">
<a id="drop4" role="button" data-toggle="dropdown" href="#">Dropdown <span class="caret"></span></a>
<ul id="menu1" class="dropdown-menu" role="menu" aria-labelledby="drop4">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
<li class="dropdown">
<a id="drop5" role="button" data-toggle="dropdown" href="#">Dropdown 2 <span class="caret"></span></a>
<ul id="menu2" class="dropdown-menu" role="menu" aria-labelledby="drop5">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
<li class="dropdown">
<a id="drop6" role="button" data-toggle="dropdown" href="#">Dropdown 3 <span class="caret"></span></a>
<ul id="menu3" class="dropdown-menu" role="menu" aria-labelledby="drop6">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Another action</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Something else here</a></li>
<li role="presentation" class="divider"></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
</ul>
</li>
</ul> <!-- /pills -->
</div> <!-- /example -->
<h2 id="dropdowns-usage">Usage</h2>
<p>Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the <code>.open</code> class on the parent list item. When opened, the plugin also adds <code>.dropdown-backdrop</code> as a click area for closing dropdown menus when clicking outside the menu. Note: The <code>data-toggle=dropdown</code> attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it.</p>
<h3>Via data attributes</h3>
<p>Add <code>data-toggle="dropdown"</code> to a link or button to toggle a dropdown.</p>
{% highlight html %}
<div class="dropdown">
<a data-toggle="dropdown" href="#">Dropdown trigger</a>
<ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
...
</ul>
</div>
{% endhighlight %}
<p>To keep URLs intact, use the <code>data-target</code> attribute instead of <code>href="#"</code>.</p>
{% highlight html %}
<div class="dropdown">
<a id="dLabel" role="button" data-toggle="dropdown" data-target="#" href="/page.html">
Dropdown <span class="caret"></span>
</a>
<ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
...
</ul>
</div>
{% endhighlight %}
<h3>Via JavaScript</h3>
<p>Call the dropdowns via JavaScript:</p>
{% highlight js %}
$('.dropdown-toggle').dropdown()
{% endhighlight %}
<div class="bs-callout bs-callout-info">
<h4><code>data-toggle="dropdown"</code> still required</h4>
<p>Regardless of whether you call your dropdown via JavaScript or instead use the data-api, <code>data-toggle="dropdown"</code> is always required to be present on the dropdown's trigger element.</p>
</div>
<h3>Options</h3>
<p><em>None</em></p>
<h3>Methods</h3>
<h4>$().dropdown('toggle')</h4>
<p>Toggles the dropdown menu of a given navbar or tabbed navigation.</p>
<h3>Events</h3>
<p>All dropdown events are fired at the <code>.dropdown-menu</code>'s parent element.</p>
<div class="table-responsive">
<table class="table table-bordered table-striped">
<thead>
<tr>
<th style="width: 150px;">Event Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>show.bs.dropdown</td>
<td>This event fires immediately when the show instance method is called. The toggling anchor element is available as the <code>relatedTarget</code> property of the event.</td>
</tr>
<tr>
<td>shown.bs.dropdown</td>
<td>This event is fired when the dropdown has been made visible to the user (will wait for CSS transitions, to complete). The toggling anchor element is available as the <code>relatedTarget</code> property of the event.</td>
</tr>
<tr>
<td>hide.bs.dropdown</td>
<td>This event is fired immediately when the hide instance method has been called. The toggling anchor element is available as the <code>relatedTarget</code> property of the event.</td>
</tr>
<tr>
<td>hidden.bs.dropdown</td>
<td>This event is fired when the dropdown has finished being hidden from the user (will wait for CSS transitions, to complete). The toggling anchor element is available as the <code>relatedTarget</code> property of the event.</td>
</tr>
</tbody>
</table>
</div><!-- ./bs-table-responsive -->
{% highlight js %}
$('#myDropdown').on('show.bs.dropdown', function () {
// do something…
})
{% endhighlight %}
</div>
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