Navigation available in Bootstrap share general markup and styles, from the base `.nav` class to the active and disabled states. Swap modifier classes to switch between each style.
## Contents
* Will be replaced with the ToC, excluding the "Contents" header
{:toc}
## Regarding accessibility
If you are using navs to provide a navigation bar, be sure to add a `role="navigation"` to the most logical parent container of the `<ul>`, or wrap a `<nav>` element around the whole navigation. Do not add the role to the `<ul>` itself, as this would prevent it from being announced as an actual list by assistive technologies.
Roll your own navigation style by extending the base `.nav` component. All Bootstrap's nav components are built on top of this by specifying additional styles. Includes styles for the disabled state, but **not the active state**.
Classes are used throughout, so your markup can be super flexible. Use `<ul>`s like above, or roll your own with say a `<nav>` element. The change in nav item display below **is intentional** as `<li>`s have a different default `display` than regular `<a>` elements.
Takes the basic nav from above and adds the `.nav-tabs` class to generate a tabbed interface. Use them to create tabbable regions with our [tab JavaScript plugin](#javascript-behavior).
{% example html %}
<ulclass="nav nav-tabs">
<liclass="nav-item">
<aclass="nav-link active"href="#">Active</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Link</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Another link</a>
</li>
<liclass="nav-item">
<aclass="nav-link disabled"href="#">Disabled</a>
</li>
</ul>
{% endexample %}
## Pills
Take that same HTML, but use `.nav-pills` instead:
{% example html %}
<ulclass="nav nav-pills">
<liclass="nav-item">
<aclass="nav-link active"href="#">Active</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Link</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Another link</a>
</li>
<liclass="nav-item">
<aclass="nav-link disabled"href="#">Disabled</a>
</li>
</ul>
{% endexample %}
## Stacked pills
Just add `.nav-stacked` to the `.nav.nav-pills`.
{% example html %}
<ulclass="nav nav-pills nav-stacked">
<liclass="nav-item">
<aclass="nav-link active"href="#">Active</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Link</a>
</li>
<liclass="nav-item">
<aclass="nav-link"href="#">Another link</a>
</li>
<liclass="nav-item">
<aclass="nav-link disabled"href="#">Disabled</a>
</li>
</ul>
{% endexample %}
## Using dropdowns
Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin]({{ site.baseurl }}/components/dropdowns/#usage).
Use the tab JavaScript plugin—include it individually or through the compiled `bootstrap.js` file—to extend our navigational tabs and pills to create tabbable panes of local content, even via dropdown menus.
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</div>
</div>
</div>
### Using data attributes
You can activate a tab or pill navigation without writing any JavaScript by simply specifying `data-toggle="tab"` or `data-toggle="pill"` on an element. Use these data attributes on `.nav-tabs` or `.nav-pills`.
Selects the given tab and shows its associated pane. Any other tab that was previously selected becomes unselected and its associated pane is hidden. **Returns to the caller before the tab pane has actually been shown** (i.e. before the `shown.bs.tab` event occurs).
<td>This event fires on tab show, but before the new tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
</tr>
<tr>
<td>shown.bs.tab</td>
<td>This event fires on tab show after a tab has been shown. Use <code>event.target</code> and <code>event.relatedTarget</code> to target the active tab and the previous active tab (if available) respectively.</td>
</tr>
<tr>
<td>hide.bs.tab</td>
<td>This event fires when a new tab is to be shown (and thus the previous active tab is to be hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the current active tab and the new soon-to-be-active tab, respectively.</td>
</tr>
<tr>
<td>hidden.bs.tab</td>
<td>This event fires after a new tab is shown (and thus the previous active tab is hidden). Use <code>event.target</code> and <code>event.relatedTarget</code> to target the previous active tab and the new active tab, respectively.</td>
</tr>
</tbody>
</table>
{% highlight js %}
$('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
