--- layout: docs title: Navs description: Documentation and examples for how to use Bootstrap's included navigation components. group: components toc: true --- ## Base nav 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. The base `.nav` component is built with flexbox and provide a strong foundation for building all types of navigation components. It includes some style overrides (for working with lists), some link padding for larger hit areas, and basic disabled styling. {% capture callout %} The base `.nav` component does not include any `.active` state. The following examples include the class, mainly to demonstrate that this particular class does not trigger any special styling. {% endcapture %} {% include callout.html content=callout type="info" %} {% capture example %}

{% endcapture %} {% include example.html content=example %} Classes are used throughout, so your markup can be super flexible. Use `

` element. Because the `.nav` uses `display: flex`, the nav links behave the same as nav items would, but without the extra markup. {% capture example %} {% endcapture %} {% include example.html content=example %} ## Available styles Change the style of `.nav`s component with modifiers and utilities. Mix and match as needed, or build your own. ### Horizontal alignment Change the horizontal alignment of your nav with [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/layout/grid/#horizontal-alignment). By default, navs are left-aligned, but you can easily change them to center or right aligned. Centered with `.justify-content-center`: {% capture example %}

{% endcapture %} {% include example.html content=example %} Right-aligned with `.justify-content-end`: {% capture example %}

{% endcapture %} {% include example.html content=example %} ### Vertical Stack your navigation by changing the flex item direction with the `.flex-column` utility. Need to stack them on some viewports but not others? Use the responsive versions (e.g., `.flex-sm-column`). {% capture example %}

{% endcapture %} {% include example.html content=example %} As always, vertical navigation is possible without `

`-based navigation, be sure to include `.nav-item` on the anchors. {% capture example %} {% endcapture %} {% include example.html content=example %} For equal-width elements, use `.nav-justified`. All horizontal space will be occupied by nav links, but unlike the `.nav-fill` above, every nav item will be the same width. {% capture example %}

{% endcapture %} {% include example.html content=example %} Similar to the `.nav-fill` example using a `

`-based navigation, be sure to include `.nav-item` on the anchors. {% capture example %} {% endcapture %} {% include example.html content=example %} ## Working with flex utilities If you need responsive nav variations, consider using a series of [flexbox utilities]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/flex/). While more verbose, these utilities offer greater customization across responsive breakpoints. In the example below, our nav will be stacked on the lowest breakpoint, then adapt to a horizontal layout that fills the available width starting from the small breakpoint. {% capture example %} {% endcapture %} {% include example.html content=example %} ## Regarding accessibility If you're using navs to provide a navigation bar, be sure to add a `role="navigation"` to the most logical parent container of the `

` element around the whole navigation. Do not add the role to the `

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...

`, you shouldn't add `role="tablist"` directly to it, as this would override the element's native role as a navigation landmark. Instead, switch to an alternative element (in the example below, a simple `

`) and wrap the `

` around it.

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{% highlight html %}

...

{% endhighlight %} The tabs plugin also works with pills.

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{% highlight html %}

...

{% endhighlight %} And with vertical pills.

Home Profile Messages Settings

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{% highlight html %}

Home Profile Messages Settings

...

{% endhighlight %} ### 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`. {% highlight html %}

...

{% endhighlight %} ### Via JavaScript Enable tabbable tabs via JavaScript (each tab needs to be activated individually): {% highlight js %} $('#myTab a').on('click', function (e) { e.preventDefault() $(this).tab('show') }) {% endhighlight %} You can activate individual tabs in several ways: {% highlight js %} $('#myTab a[href="#profile"]').tab('show') // Select tab by name $('#myTab li:first-child a').tab('show') // Select first tab $('#myTab li:last-child a').tab('show') // Select last tab $('#myTab li:nth-child(3) a').tab('show') // Select third tab {% endhighlight %} ### Fade effect To make tabs fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.show` to make the initial content visible. {% highlight html %}

...

{% endhighlight %} ### Methods {% include callout-danger-async-methods.md %} #### $().tab Activates a tab element and content container. Tab should have either a `data-target` or an `href` targeting a container node in the DOM. {% highlight html %}

...

{% endhighlight %} #### .tab('show') 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). {% highlight js %} $('#someTab').tab('show') {% endhighlight %} #### .tab('dispose') Destroys an element's tab. ### Events When showing a new tab, the events fire in the following order: 1. `hide.bs.tab` (on the current active tab) 2. `show.bs.tab` (on the to-be-shown tab) 3. `hidden.bs.tab` (on the previous active tab, the same one as for the `hide.bs.tab` event) 4. `shown.bs.tab` (on the newly-active just-shown tab, the same one as for the `show.bs.tab` event) If no tab was already active, then the `hide.bs.tab` and `hidden.bs.tab` events will not be fired.

Event Type	Description
show.bs.tab	This event fires on tab show, but before the new tab has been shown. Use `event.target` and `event.relatedTarget` to target the active tab and the previous active tab (if available) respectively.
shown.bs.tab	This event fires on tab show after a tab has been shown. Use `event.target` and `event.relatedTarget` to target the active tab and the previous active tab (if available) respectively.
hide.bs.tab	This event fires when a new tab is to be shown (and thus the previous active tab is to be hidden). Use `event.target` and `event.relatedTarget` to target the current active tab and the new soon-to-be-active tab, respectively.
hidden.bs.tab	This event fires after a new tab is shown (and thus the previous active tab is hidden). Use `event.target` and `event.relatedTarget` to target the previous active tab and the new active tab, respectively.

{% highlight js %} $('a[data-toggle="tab"]').on('shown.bs.tab', function (e) { e.target // newly activated tab e.relatedTarget // previous active tab }) {% endhighlight %}