346 lines
14 KiB
Markdown
346 lines
14 KiB
Markdown
---
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layout: page
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title: Navs
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group: components
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---
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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.
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## Contents
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* Will be replaced with the ToC, excluding the "Contents" header
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{:toc}
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## Regarding accessibility
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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.
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## Base nav
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Roll your own navigation style by extending the base `.nav` component. All Bootstrap's nav components are built on top of this. Includes styles for the disabled state, but **not the active state**.
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{% example html %}
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<ul class="nav">
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<li class="nav-item">
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<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
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<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
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<a class="nav-link" href="#">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a class="nav-link" href="#">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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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.
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{% example html %}
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<nav class="nav">
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<a class="nav-link active" href="#">Active</a>
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<a class="nav-link" href="#">Link</a>
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<a class="nav-link" href="#">Another link</a>
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<a class="nav-link disabled" href="#">Disabled</a>
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</nav>
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{% endexample %}
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## Tabs
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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/tabs).
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{% example html %}
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<ul class="nav nav-tabs">
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<li class="nav-item active">
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<a href="#" class="nav-link">Active</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Link</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a href="#" class="nav-link">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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## Pills
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Take that same HTML, but use `.nav-pills` instead:
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{% example html %}
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<ul class="nav nav-pills">
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<li class="nav-item active">
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<a href="#" class="nav-link">Active</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Link</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a href="#" class="nav-link">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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## Stacked pills
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Just add `.nav-stacked` to the `.nav.nav-pills`.
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{% example html %}
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<ul class="nav nav-pills nav-stacked">
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<li class="nav-item active">
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<a href="#" class="nav-link">Active</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Link</a>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a href="#" class="nav-link">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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## Using dropdowns
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Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin]({{ site.baseurl }}javascript/#dropdowns).
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### Tabs with dropdowns
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{% example html %}
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<ul class="nav nav-tabs">
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<li class="nav-item active">
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<a href="#" class="nav-link">Active</a>
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</li>
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<li class="nav-item">
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<a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
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<ul class="dropdown-menu">
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<li><a href="#">Action</a></li>
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<li><a href="#">Another action</a></li>
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<li><a href="#">Something else here</a></li>
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<li role="separator" class="divider"></li>
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<li><a href="#">Separated link</a></li>
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</ul>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a href="#" class="nav-link">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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### Pills with dropdowns
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{% example html %}
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<ul class="nav nav-pills">
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<li class="nav-item active">
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<a href="#" class="nav-link">Active</a>
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</li>
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<li class="nav-item">
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<a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">Dropdown</a>
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<ul class="dropdown-menu">
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<li><a href="#">Action</a></li>
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<li><a href="#">Another action</a></li>
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<li><a href="#">Something else here</a></li>
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<li role="separator" class="divider"></li>
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<li><a href="#">Separated link</a></li>
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</ul>
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</li>
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<li class="nav-item">
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<a href="#" class="nav-link">Another link</a>
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</li>
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<li class="nav-item disabled">
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<a href="#" class="nav-link">Disabled</a>
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</li>
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</ul>
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{% endexample %}
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## JavaScript behavior
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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 class="bd-example bd-example-tabs" role="tabpanel">
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<ul id="myTab" class="nav nav-tabs" role="tablist">
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<li class="active">
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<a href="#home" id="home-tab" role="tab" data-toggle="tab" aria-controls="home" aria-expanded="true">Home</a>
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</li>
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<li>
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<a href="#profile" role="tab" id="profile-tab" data-toggle="tab" aria-controls="profile">Profile</a>
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</li>
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<li class="dropdown">
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<a href="#" id="myTabDrop1" class="dropdown-toggle" data-toggle="dropdown" aria-controls="myTabDrop1-contents">
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Dropdown
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</a>
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<ul class="dropdown-menu" aria-labelledby="myTabDrop1" id="myTabDrop1-contents">
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<li><a href="#dropdown1" role="tab" id="dropdown1-tab" data-toggle="tab" aria-controls="dropdown1">@fat</a></li>
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<li><a href="#dropdown2" role="tab" id="dropdown2-tab" data-toggle="tab" aria-controls="dropdown2">@mdo</a></li>
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</ul>
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</li>
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</ul>
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<div id="myTabContent" class="tab-content">
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<div role="tabpanel" class="tab-pane fade in active" id="home" aria-labelledBy="home-tab">
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<p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
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</div>
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<div role="tabpanel" class="tab-pane fade" id="profile" aria-labelledBy="profile-tab">
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<p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
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</div>
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<div role="tabpanel" class="tab-pane fade" id="dropdown1" aria-labelledBy="dropdown1-tab">
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<p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
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</div>
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<div role="tabpanel" class="tab-pane fade" id="dropdown2" aria-labelledBy="dropdown2-tab">
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<p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
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</div>
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</div>
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</div>
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### Using data attributes
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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`.
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<div role="tabpanel">
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{% highlight html %}
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<!-- Nav tabs -->
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<ul class="nav nav-tabs" role="tablist">
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<li class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
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<li><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
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<li><a href="#messages" role="tab" data-toggle="tab">Messages</a></li>
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<li><a href="#settings" role="tab" data-toggle="tab">Settings</a></li>
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</ul>
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<!-- Tab panes -->
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<div class="tab-content">
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<div role="tabpanel" class="tab-pane active" id="home">...</div>
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<div role="tabpanel" class="tab-pane" id="profile">...</div>
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<div role="tabpanel" class="tab-pane" id="messages">...</div>
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<div role="tabpanel" class="tab-pane" id="settings">...</div>
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</div>
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{% endhighlight %}
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</div>
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### Via JavaScript
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Enable tabbable tabs via JavaScript (each tab needs to be activated individually):
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{% highlight js %}
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$('#myTab a').click(function (e) {
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e.preventDefault()
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$(this).tab('show')
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})
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{% endhighlight %}
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You can activate individual tabs in several ways:
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{% highlight js %}
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$('#myTab a[href="#profile"]').tab('show') // Select tab by name
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$('#myTab a:first').tab('show') // Select first tab
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$('#myTab a:last').tab('show') // Select last tab
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$('#myTab li:eq(2) a').tab('show') // Select third tab (0-indexed)
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{% endhighlight %}
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### Fade effect
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To make tabs fade in, add `.fade` to each `.tab-pane`. The first tab pane must also have `.in to properly fade in initial content.
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{% highlight html %}
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<div class="tab-content">
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<div role="tabpanel" class="tab-pane fade in active" id="home">...</div>
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<div role="tabpanel" class="tab-pane fade" id="profile">...</div>
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<div role="tabpanel" class="tab-pane fade" id="messages">...</div>
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<div role="tabpanel" class="tab-pane fade" id="settings">...</div>
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</div>
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{% endhighlight %}
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### Methods
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#### $().tab
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Activates a tab element and content container. Tab should have either a `data-target` or an `href` targeting a container node in the DOM.
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{% highlight html %}
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<ul class="nav nav-tabs" role="tablist" id="myTab">
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<li class="active">
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<a href="#home" role="tab" data-toggle="tab" aria-controls="home">Home</a>
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</li>
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<li>
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<a href="#profile" role="tab" data-toggle="tab" aria-controls="profile">Profile</a>
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</li>
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<li>
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<a href="#messages" role="tab" data-toggle="tab" aria-controls="messages">Messages</a>
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</li>
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<li>
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<a href="#settings" role="tab" data-toggle="tab" aria-controls="settings">Settings</a>
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</li>
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</ul>
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<div class="tab-content">
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<div role="tabpanel" class="tab-pane active" id="home">...</div>
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<div role="tabpanel" class="tab-pane" id="profile">...</div>
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<div role="tabpanel" class="tab-pane" id="messages">...</div>
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<div role="tabpanel" class="tab-pane" id="settings">...</div>
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</div>
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<script>
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$(function () {
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$('#myTab a:last').tab('show')
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})
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</script>
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{% endhighlight %}
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### Events
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When showing a new tab, the events fire in the following order:
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1. `hide.bs.tab` (on the current active tab)
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2. `show.bs.tab` (on the to-be-shown tab)
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3. `hidden.bs.tab` (on the previous active tab, the same one as for the `hide.bs.tab` event)
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4. `shown.bs.tab` (on the newly-active just-shown tab, the same one as for the `show.bs.tab` event)
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If no tab was already active, then the `hide.bs.tab` and `hidden.bs.tab` events will not be fired.
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<div class="table-responsive">
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<table class="table table-bordered table-striped">
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<thead>
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<tr>
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<th style="width: 150px;">Event Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>show.bs.tab</td>
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<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>
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</tr>
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<tr>
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<td>shown.bs.tab</td>
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<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>
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</tr>
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<tr>
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<td>hide.bs.tab</td>
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<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>
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</tr>
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<tr>
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<td>hidden.bs.tab</td>
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<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>
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</tr>
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</tbody>
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</table>
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</div>
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{% highlight js %}
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$('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
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e.target // newly activated tab
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e.relatedTarget // previous active tab
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})
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{% endhighlight %}
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