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Bootstrap/site/content/docs/5.0/components/navs-tabs.md

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---
layout: docs
title: Navs and tabs
description: Documentation and examples for how to use Bootstrap's included navigation components.
group: components
aliases: "/docs/5.0/components/navs/"
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toc: true
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---
## Base nav
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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.
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.
{{< callout info >}}
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.
To convey the active state to assistive technologies, use the `aria-current` attribute — using the `page` value for current page, or `true` for the current item in a set.
{{< /callout >}}
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{{< example >}}
Merge branch 'master' into v4 Conflicts: Gruntfile.js _config.yml dist/css/bootstrap-theme.css dist/css/bootstrap-theme.min.css dist/css/bootstrap.css dist/css/bootstrap.css.map dist/css/bootstrap.min.css dist/fonts/glyphicons-halflings-regular.eot dist/fonts/glyphicons-halflings-regular.svg dist/fonts/glyphicons-halflings-regular.ttf dist/fonts/glyphicons-halflings-regular.woff docs/_data/glyphicons.yml docs/_includes/components/alerts.html docs/_includes/components/badges.html docs/_includes/components/button-dropdowns.html docs/_includes/components/button-groups.html docs/_includes/components/dropdowns.html docs/_includes/components/glyphicons.html docs/_includes/components/input-groups.html docs/_includes/components/labels.html docs/_includes/components/media.html docs/_includes/components/navbar.html docs/_includes/components/navs.html docs/_includes/components/pagination.html docs/_includes/components/panels.html docs/_includes/components/progress-bars.html docs/_includes/css/buttons.html docs/_includes/css/forms.html docs/_includes/css/grid.html docs/_includes/css/helpers.html docs/_includes/css/images.html docs/_includes/css/less.html docs/_includes/css/responsive-utilities.html docs/_includes/css/sass.html docs/_includes/css/tables.html docs/_includes/css/type.html docs/_includes/getting-started/accessibility.html docs/_includes/getting-started/browser-device-support.html docs/_includes/getting-started/community.html docs/_includes/getting-started/download.html docs/_includes/getting-started/examples.html docs/_includes/getting-started/whats-included.html docs/_includes/js/affix.html docs/_includes/js/alerts.html docs/_includes/js/buttons.html docs/_includes/js/carousel.html docs/_includes/js/collapse.html docs/_includes/js/dropdowns.html docs/_includes/js/modal.html docs/_includes/js/overview.html docs/_includes/js/tabs.html docs/_includes/nav/components.html docs/_includes/nav/css.html docs/_includes/nav/javascript.html docs/_includes/nav/main.html docs/about.html docs/assets/css/docs.min.css docs/assets/js/customize.min.js docs/assets/js/raw-files.min.js docs/dist/css/bootstrap-theme.css docs/dist/css/bootstrap-theme.min.css docs/dist/css/bootstrap.css docs/dist/css/bootstrap.css.map docs/dist/css/bootstrap.min.css docs/dist/fonts/glyphicons-halflings-regular.eot docs/dist/fonts/glyphicons-halflings-regular.svg docs/dist/fonts/glyphicons-halflings-regular.ttf docs/dist/fonts/glyphicons-halflings-regular.woff docs/examples/carousel/index.html docs/examples/navbar-fixed-top/index.html docs/examples/navbar-static-top/index.html docs/examples/navbar/index.html docs/examples/non-responsive/index.html docs/examples/non-responsive/non-responsive.css docs/examples/sticky-footer-navbar/index.html docs/examples/theme/index.html fonts/glyphicons-halflings-regular.eot fonts/glyphicons-halflings-regular.svg fonts/glyphicons-halflings-regular.ttf fonts/glyphicons-halflings-regular.woff less/_carousel.less less/_forms.less less/glyphicons.less
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<ul class="nav">
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<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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Classes are used throughout, so your markup can be super flexible. Use `<ul>`s like above, `<ol>` if the order of your items is important, or roll your own with a `<nav>` element. Because the `.nav` uses `display: flex`, the nav links behave the same as nav items would, but without the extra markup.
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{{< example >}}
Merge branch 'master' into v4 Conflicts: Gruntfile.js _config.yml dist/css/bootstrap-theme.css dist/css/bootstrap-theme.min.css dist/css/bootstrap.css dist/css/bootstrap.css.map dist/css/bootstrap.min.css dist/fonts/glyphicons-halflings-regular.eot dist/fonts/glyphicons-halflings-regular.svg dist/fonts/glyphicons-halflings-regular.ttf dist/fonts/glyphicons-halflings-regular.woff docs/_data/glyphicons.yml docs/_includes/components/alerts.html docs/_includes/components/badges.html docs/_includes/components/button-dropdowns.html docs/_includes/components/button-groups.html docs/_includes/components/dropdowns.html docs/_includes/components/glyphicons.html docs/_includes/components/input-groups.html docs/_includes/components/labels.html docs/_includes/components/media.html docs/_includes/components/navbar.html docs/_includes/components/navs.html docs/_includes/components/pagination.html docs/_includes/components/panels.html docs/_includes/components/progress-bars.html docs/_includes/css/buttons.html docs/_includes/css/forms.html docs/_includes/css/grid.html docs/_includes/css/helpers.html docs/_includes/css/images.html docs/_includes/css/less.html docs/_includes/css/responsive-utilities.html docs/_includes/css/sass.html docs/_includes/css/tables.html docs/_includes/css/type.html docs/_includes/getting-started/accessibility.html docs/_includes/getting-started/browser-device-support.html docs/_includes/getting-started/community.html docs/_includes/getting-started/download.html docs/_includes/getting-started/examples.html docs/_includes/getting-started/whats-included.html docs/_includes/js/affix.html docs/_includes/js/alerts.html docs/_includes/js/buttons.html docs/_includes/js/carousel.html docs/_includes/js/collapse.html docs/_includes/js/dropdowns.html docs/_includes/js/modal.html docs/_includes/js/overview.html docs/_includes/js/tabs.html docs/_includes/nav/components.html docs/_includes/nav/css.html docs/_includes/nav/javascript.html docs/_includes/nav/main.html docs/about.html docs/assets/css/docs.min.css docs/assets/js/customize.min.js docs/assets/js/raw-files.min.js docs/dist/css/bootstrap-theme.css docs/dist/css/bootstrap-theme.min.css docs/dist/css/bootstrap.css docs/dist/css/bootstrap.css.map docs/dist/css/bootstrap.min.css docs/dist/fonts/glyphicons-halflings-regular.eot docs/dist/fonts/glyphicons-halflings-regular.svg docs/dist/fonts/glyphicons-halflings-regular.ttf docs/dist/fonts/glyphicons-halflings-regular.woff docs/examples/carousel/index.html docs/examples/navbar-fixed-top/index.html docs/examples/navbar-static-top/index.html docs/examples/navbar/index.html docs/examples/non-responsive/index.html docs/examples/non-responsive/non-responsive.css docs/examples/sticky-footer-navbar/index.html docs/examples/theme/index.html fonts/glyphicons-halflings-regular.eot fonts/glyphicons-halflings-regular.svg fonts/glyphicons-halflings-regular.ttf fonts/glyphicons-halflings-regular.woff less/_carousel.less less/_forms.less less/glyphicons.less
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<nav class="nav">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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<a class="nav-link" href="#">Link</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</nav>
{{< /example >}}
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## 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]({{< docsref "/layout/grid#horizontal-alignment" >}}). By default, navs are left-aligned, but you can easily change them to center or right aligned.
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Centered with `.justify-content-center`:
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{{< example >}}
<ul class="nav justify-content-center">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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Right-aligned with `.justify-content-end`:
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{{< example >}}
<ul class="nav justify-content-end">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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### Vertical
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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`).
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{{< example >}}
<ul class="nav flex-column">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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As always, vertical navigation is possible without `<ul>`s, too.
{{< example >}}
<nav class="nav flex-column">
<a class="nav-link active" aria-current="page" href="#">Active</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</nav>
{{< /example >}}
### 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-behavior).
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{{< example >}}
Merge branch 'master' into v4 Conflicts: Gruntfile.js _config.yml dist/css/bootstrap-theme.css dist/css/bootstrap-theme.min.css dist/css/bootstrap.css dist/css/bootstrap.css.map dist/css/bootstrap.min.css dist/fonts/glyphicons-halflings-regular.eot dist/fonts/glyphicons-halflings-regular.svg dist/fonts/glyphicons-halflings-regular.ttf dist/fonts/glyphicons-halflings-regular.woff docs/_data/glyphicons.yml docs/_includes/components/alerts.html docs/_includes/components/badges.html docs/_includes/components/button-dropdowns.html docs/_includes/components/button-groups.html docs/_includes/components/dropdowns.html docs/_includes/components/glyphicons.html docs/_includes/components/input-groups.html docs/_includes/components/labels.html docs/_includes/components/media.html docs/_includes/components/navbar.html docs/_includes/components/navs.html docs/_includes/components/pagination.html docs/_includes/components/panels.html docs/_includes/components/progress-bars.html docs/_includes/css/buttons.html docs/_includes/css/forms.html docs/_includes/css/grid.html docs/_includes/css/helpers.html docs/_includes/css/images.html docs/_includes/css/less.html docs/_includes/css/responsive-utilities.html docs/_includes/css/sass.html docs/_includes/css/tables.html docs/_includes/css/type.html docs/_includes/getting-started/accessibility.html docs/_includes/getting-started/browser-device-support.html docs/_includes/getting-started/community.html docs/_includes/getting-started/download.html docs/_includes/getting-started/examples.html docs/_includes/getting-started/whats-included.html docs/_includes/js/affix.html docs/_includes/js/alerts.html docs/_includes/js/buttons.html docs/_includes/js/carousel.html docs/_includes/js/collapse.html docs/_includes/js/dropdowns.html docs/_includes/js/modal.html docs/_includes/js/overview.html docs/_includes/js/tabs.html docs/_includes/nav/components.html docs/_includes/nav/css.html docs/_includes/nav/javascript.html docs/_includes/nav/main.html docs/about.html docs/assets/css/docs.min.css docs/assets/js/customize.min.js docs/assets/js/raw-files.min.js docs/dist/css/bootstrap-theme.css docs/dist/css/bootstrap-theme.min.css docs/dist/css/bootstrap.css docs/dist/css/bootstrap.css.map docs/dist/css/bootstrap.min.css docs/dist/fonts/glyphicons-halflings-regular.eot docs/dist/fonts/glyphicons-halflings-regular.svg docs/dist/fonts/glyphicons-halflings-regular.ttf docs/dist/fonts/glyphicons-halflings-regular.woff docs/examples/carousel/index.html docs/examples/navbar-fixed-top/index.html docs/examples/navbar-static-top/index.html docs/examples/navbar/index.html docs/examples/non-responsive/index.html docs/examples/non-responsive/non-responsive.css docs/examples/sticky-footer-navbar/index.html docs/examples/theme/index.html fonts/glyphicons-halflings-regular.eot fonts/glyphicons-halflings-regular.svg fonts/glyphicons-halflings-regular.ttf fonts/glyphicons-halflings-regular.woff less/_carousel.less less/_forms.less less/glyphicons.less
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<ul class="nav nav-tabs">
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<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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### Pills
Take that same HTML, but use `.nav-pills` instead:
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{{< example >}}
Merge branch 'master' into v4 Conflicts: Gruntfile.js _config.yml dist/css/bootstrap-theme.css dist/css/bootstrap-theme.min.css dist/css/bootstrap.css dist/css/bootstrap.css.map dist/css/bootstrap.min.css dist/fonts/glyphicons-halflings-regular.eot dist/fonts/glyphicons-halflings-regular.svg dist/fonts/glyphicons-halflings-regular.ttf dist/fonts/glyphicons-halflings-regular.woff docs/_data/glyphicons.yml docs/_includes/components/alerts.html docs/_includes/components/badges.html docs/_includes/components/button-dropdowns.html docs/_includes/components/button-groups.html docs/_includes/components/dropdowns.html docs/_includes/components/glyphicons.html docs/_includes/components/input-groups.html docs/_includes/components/labels.html docs/_includes/components/media.html docs/_includes/components/navbar.html docs/_includes/components/navs.html docs/_includes/components/pagination.html docs/_includes/components/panels.html docs/_includes/components/progress-bars.html docs/_includes/css/buttons.html docs/_includes/css/forms.html docs/_includes/css/grid.html docs/_includes/css/helpers.html docs/_includes/css/images.html docs/_includes/css/less.html docs/_includes/css/responsive-utilities.html docs/_includes/css/sass.html docs/_includes/css/tables.html docs/_includes/css/type.html docs/_includes/getting-started/accessibility.html docs/_includes/getting-started/browser-device-support.html docs/_includes/getting-started/community.html docs/_includes/getting-started/download.html docs/_includes/getting-started/examples.html docs/_includes/getting-started/whats-included.html docs/_includes/js/affix.html docs/_includes/js/alerts.html docs/_includes/js/buttons.html docs/_includes/js/carousel.html docs/_includes/js/collapse.html docs/_includes/js/dropdowns.html docs/_includes/js/modal.html docs/_includes/js/overview.html docs/_includes/js/tabs.html docs/_includes/nav/components.html docs/_includes/nav/css.html docs/_includes/nav/javascript.html docs/_includes/nav/main.html docs/about.html docs/assets/css/docs.min.css docs/assets/js/customize.min.js docs/assets/js/raw-files.min.js docs/dist/css/bootstrap-theme.css docs/dist/css/bootstrap-theme.min.css docs/dist/css/bootstrap.css docs/dist/css/bootstrap.css.map docs/dist/css/bootstrap.min.css docs/dist/fonts/glyphicons-halflings-regular.eot docs/dist/fonts/glyphicons-halflings-regular.svg docs/dist/fonts/glyphicons-halflings-regular.ttf docs/dist/fonts/glyphicons-halflings-regular.woff docs/examples/carousel/index.html docs/examples/navbar-fixed-top/index.html docs/examples/navbar-static-top/index.html docs/examples/navbar/index.html docs/examples/non-responsive/index.html docs/examples/non-responsive/non-responsive.css docs/examples/sticky-footer-navbar/index.html docs/examples/theme/index.html fonts/glyphicons-halflings-regular.eot fonts/glyphicons-halflings-regular.svg fonts/glyphicons-halflings-regular.ttf fonts/glyphicons-halflings-regular.woff less/_carousel.less less/_forms.less less/glyphicons.less
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<ul class="nav nav-pills">
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<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
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<li class="nav-item">
<a class="nav-link" href="#">Link</a>
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</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
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### Fill and justify
Force your `.nav`'s contents to extend the full available width one of two modifier classes. To proportionately fill all available space with your `.nav-item`s, use `.nav-fill`. Notice that all horizontal space is occupied, but not every nav item has the same width.
{{< example >}}
<ul class="nav nav-pills nav-fill">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
</li>
<li class="nav-item">
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<a class="nav-link" href="#">Much longer nav link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
{{< /example >}}
When using a `<nav>`-based navigation, you can safely omit `.nav-item` as only `.nav-link` is required for styling `<a>` elements.
{{< example >}}
<nav class="nav nav-pills nav-fill">
<a class="nav-link active" aria-current="page" href="#">Active</a>
<a class="nav-link" href="#">Much longer nav link</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</nav>
{{< /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.
{{< example >}}
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<ul class="nav nav-pills nav-justified">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
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</li>
<li class="nav-item">
<a class="nav-link" href="#">Much longer nav link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
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</li>
</ul>
{{< /example >}}
Similar to the `.nav-fill` example using a `<nav>`-based navigation.
{{< example >}}
<nav class="nav nav-pills nav-justified">
<a class="nav-link active" aria-current="page" href="#">Active</a>
<a class="nav-link" href="#">Much longer nav link</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</nav>
{{< /example >}}
## Working with flex utilities
If you need responsive nav variations, consider using a series of [flexbox utilities]({{< docsref "/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.
{{< example >}}
<nav class="nav nav-pills flex-column flex-sm-row">
<a class="flex-sm-fill text-sm-center nav-link active" aria-current="page" href="#">Active</a>
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<a class="flex-sm-fill text-sm-center nav-link" href="#">Longer nav link</a>
<a class="flex-sm-fill text-sm-center nav-link" href="#">Link</a>
<a class="flex-sm-fill text-sm-center nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</nav>
{{< /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 `<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.
Note that navigation bars, even if visually styled as tabs with the `.nav-tabs` class, should **not** be given `role="tablist"`, `role="tab"` or `role="tabpanel"` attributes. These are only appropriate for dynamic tabbed interfaces, as described in the [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices](https://www.w3.org/TR/wai-aria-practices/#tabpanel). See [JavaScript behavior](#javascript-behavior) for dynamic tabbed interfaces in this section for an example. The `aria-current` attribute is not necessary on dynamic tabbed interfaces since our JavaScript handles the selected state by adding `aria-selected="true"` on the active tab.
## Using dropdowns
Add dropdown menus with a little extra HTML and the [dropdowns JavaScript plugin]({{< docsref "/components/dropdowns#usage" >}}).
### Tabs with dropdowns
{{< example >}}
<ul class="nav nav-tabs">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
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<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Separated link</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
{{< /example >}}
### Pills with dropdowns
{{< example >}}
<ul class="nav nav-pills">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Active</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#" role="button" aria-expanded="false">Dropdown</a>
2019-12-29 02:21:20 +01:00
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Separated link</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
{{< /example >}}
2017-05-28 08:01:14 +02:00
## 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.
Dynamic tabbed interfaces, as described in the [<abbr title="Web Accessibility Initiative">WAI</abbr> <abbr title="Accessible Rich Internet Applications">ARIA</abbr> Authoring Practices](https://www.w3.org/TR/wai-aria-practices/#tabpanel), require `role="tablist"`, `role="tab"`, `role="tabpanel"`, and additional `aria-` attributes in order to convey their structure, functionality and current state to users of assistive technologies (such as screen readers).
Note that dynamic tabbed interfaces should <em>not</em> contain dropdown menus, as this causes both usability and accessibility issues. From a usability perspective, the fact that the currently displayed tab's trigger element is not immediately visible (as it's inside the closed dropdown menu) can cause confusion. From an accessibility point of view, there is currently no sensible way to map this sort of construct to a standard WAI ARIA pattern, meaning that it cannot be easily made understandable to users of assistive technologies.
<div class="bd-example">
<ul class="nav nav-tabs mb-3" id="myTab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="home-tab" data-bs-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-bs-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="contact-tab" data-bs-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
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</li>
</ul>
<div class="tab-content" id="myTabContent">
<div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">
<p>Placeholder content for the tab panel. This one relates to the home tab. Takes you miles high, so high, 'cause shes got that one international smile. There's a stranger in my bed, there's a pounding in my head. Oh, no. In another life I would make you stay. Cause I, Im capable of anything. Suiting up for my crowning battle. Used to steal your parents' liquor and climb to the roof. Tone, tan fit and ready, turn it up cause its gettin' heavy. Her love is like a drug. I guess that I forgot I had a choice.</p>
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</div>
<div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">
<p>Placeholder content for the tab panel. This one relates to the profile tab. You got the finest architecture. Passport stamps, she's cosmopolitan. Fine, fresh, fierce, we got it on lock. Never planned that one day I'd be losing you. She eats your heart out. Your kiss is cosmic, every move is magic. I mean the ones, I mean like she's the one. Greetings loved ones let's take a journey. Just own the night like the 4th of July! But you'd rather get wasted.</p>
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</div>
<div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">
<p>Placeholder content for the tab panel. This one relates to the contact tab. Her love is like a drug. All my girls vintage Chanel baby. Got a motel and built a fort out of sheets. 'Cause she's the muse and the artist. (This is how we do) So you wanna play with magic. So just be sure before you give it all to me. I'm walking, I'm walking on air (tonight). Skip the talk, heard it all, time to walk the walk. Catch her if you can. Stinging like a bee I earned my stripes.</p>
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</div>
</div>
</div>
```html
<ul class="nav nav-tabs" id="myTab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="home-tab" data-bs-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-bs-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="contact-tab" data-bs-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
</li>
</ul>
<div class="tab-content" id="myTabContent">
<div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
<div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
<div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">...</div>
</div>
```
2018-01-23 07:04:36 +01:00
To help fit your needs, this works with `<ul>`-based markup, as shown above, or with any arbitrary "roll your own" markup. Note that if you're using `<nav>`, 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 `<div>`) and wrap the `<nav>` around it.
<div class="bd-example">
<nav>
<div class="nav nav-tabs mb-3" id="nav-tab" role="tablist">
<a class="nav-link active" id="nav-home-tab" data-bs-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
<a class="nav-link" id="nav-profile-tab" data-bs-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
<a class="nav-link" id="nav-contact-tab" data-bs-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
</div>
</nav>
<div class="tab-content" id="nav-tabContent">
<div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">
<p>Placeholder content for the tab panel. This one relates to the home tab. Takes you miles high, so high, 'cause shes got that one international smile. There's a stranger in my bed, there's a pounding in my head. Oh, no. In another life I would make you stay. Cause I, Im capable of anything. Suiting up for my crowning battle. Used to steal your parents' liquor and climb to the roof. Tone, tan fit and ready, turn it up cause its gettin' heavy. Her love is like a drug. I guess that I forgot I had a choice.</p>
</div>
<div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">
<p>Placeholder content for the tab panel. This one relates to the profile tab. You got the finest architecture. Passport stamps, she's cosmopolitan. Fine, fresh, fierce, we got it on lock. Never planned that one day I'd be losing you. She eats your heart out. Your kiss is cosmic, every move is magic. I mean the ones, I mean like she's the one. Greetings loved ones let's take a journey. Just own the night like the 4th of July! But you'd rather get wasted.</p>
</div>
<div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">
<p>Placeholder content for the tab panel. This one relates to the contact tab. Her love is like a drug. All my girls vintage Chanel baby. Got a motel and built a fort out of sheets. 'Cause she's the muse and the artist. (This is how we do) So you wanna play with magic. So just be sure before you give it all to me. I'm walking, I'm walking on air (tonight). Skip the talk, heard it all, time to walk the walk. Catch her if you can. Stinging like a bee I earned my stripes.</p>
</div>
</div>
</div>
```html
<nav>
<div class="nav nav-tabs" id="nav-tab" role="tablist">
<a class="nav-link active" id="nav-home-tab" data-bs-toggle="tab" href="#nav-home" role="tab" aria-controls="nav-home" aria-selected="true">Home</a>
<a class="nav-link" id="nav-profile-tab" data-bs-toggle="tab" href="#nav-profile" role="tab" aria-controls="nav-profile" aria-selected="false">Profile</a>
<a class="nav-link" id="nav-contact-tab" data-bs-toggle="tab" href="#nav-contact" role="tab" aria-controls="nav-contact" aria-selected="false">Contact</a>
</div>
</nav>
<div class="tab-content" id="nav-tabContent">
<div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">...</div>
<div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">...</div>
<div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">...</div>
</div>
```
The tabs plugin also works with pills.
<div class="bd-example">
<ul class="nav nav-pills mb-3" id="pills-tab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="pills-home-tab" data-bs-toggle="pill" href="#pills-home" role="tab" aria-controls="pills-home" aria-selected="true">Home</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="pills-profile-tab" data-bs-toggle="pill" href="#pills-profile" role="tab" aria-controls="pills-profile" aria-selected="false">Profile</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="pills-contact-tab" data-bs-toggle="pill" href="#pills-contact" role="tab" aria-controls="pills-contact" aria-selected="false">Contact</a>
</li>
</ul>
<div class="tab-content" id="pills-tabContent">
<div class="tab-pane fade show active" id="pills-home" role="tabpanel" aria-labelledby="pills-home-tab">
<p>Placeholder content for the tab panel. This one relates to the home tab. Takes you miles high, so high, 'cause shes got that one international smile. There's a stranger in my bed, there's a pounding in my head. Oh, no. In another life I would make you stay. Cause I, Im capable of anything. Suiting up for my crowning battle. Used to steal your parents' liquor and climb to the roof. Tone, tan fit and ready, turn it up cause its gettin' heavy. Her love is like a drug. I guess that I forgot I had a choice.</p>
</div>
<div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">
<p>Placeholder content for the tab panel. This one relates to the profile tab. You got the finest architecture. Passport stamps, she's cosmopolitan. Fine, fresh, fierce, we got it on lock. Never planned that one day I'd be losing you. She eats your heart out. Your kiss is cosmic, every move is magic. I mean the ones, I mean like she's the one. Greetings loved ones let's take a journey. Just own the night like the 4th of July! But you'd rather get wasted.</p>
</div>
<div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">
<p>Placeholder content for the tab panel. This one relates to the contact tab. Her love is like a drug. All my girls vintage Chanel baby. Got a motel and built a fort out of sheets. 'Cause she's the muse and the artist. (This is how we do) So you wanna play with magic. So just be sure before you give it all to me. I'm walking, I'm walking on air (tonight). Skip the talk, heard it all, time to walk the walk. Catch her if you can. Stinging like a bee I earned my stripes.</p>
</div>
</div>
</div>
```html
<ul class="nav nav-pills mb-3" id="pills-tab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="pills-home-tab" data-bs-toggle="pill" href="#pills-home" role="tab" aria-controls="pills-home" aria-selected="true">Home</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="pills-profile-tab" data-bs-toggle="pill" href="#pills-profile" role="tab" aria-controls="pills-profile" aria-selected="false">Profile</a>
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="pills-contact-tab" data-bs-toggle="pill" href="#pills-contact" role="tab" aria-controls="pills-contact" aria-selected="false">Contact</a>
</li>
</ul>
<div class="tab-content" id="pills-tabContent">
<div class="tab-pane fade show active" id="pills-home" role="tabpanel" aria-labelledby="pills-home-tab">...</div>
<div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">...</div>
<div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">...</div>
</div>
```
And with vertical pills.
<div class="bd-example">
<div class="d-flex align-items-start">
<div class="nav flex-column nav-pills me-3" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-bs-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Home</a>
<a class="nav-link" id="v-pills-profile-tab" data-bs-toggle="pill" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false">Profile</a>
<a class="nav-link" id="v-pills-messages-tab" data-bs-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
<a class="nav-link" id="v-pills-settings-tab" data-bs-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
</div>
<div class="tab-content" id="v-pills-tabContent">
<div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">
<p>Placeholder content for the tab panel. This one relates to the home tab. Saw you downtown singing the Blues. Watch you circle the drain. Why don't you let me stop by? Heavy is the head that wears the crown. Yes, we make angels cry, raining down on earth from up above. Wanna see the show in 3D, a movie. Do you ever feel, feel so paper thin. Its a yes or no, no maybe.</p>
</div>
<div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">
<p>Placeholder content for the tab panel. This one relates to the profile tab. Takes you miles high, so high, 'cause shes got that one international smile. There's a stranger in my bed, there's a pounding in my head. Oh, no. In another life I would make you stay. Cause I, Im capable of anything. Suiting up for my crowning battle. Used to steal your parents' liquor and climb to the roof. Tone, tan fit and ready, turn it up cause its gettin' heavy. Her love is like a drug. I guess that I forgot I had a choice.</p>
</div>
<div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">
<p>Placeholder content for the tab panel. This one relates to the messages tab. You got the finest architecture. Passport stamps, she's cosmopolitan. Fine, fresh, fierce, we got it on lock. Never planned that one day I'd be losing you. She eats your heart out. Your kiss is cosmic, every move is magic. I mean the ones, I mean like she's the one. Greetings loved ones let's take a journey. Just own the night like the 4th of July! But you'd rather get wasted.</p>
</div>
<div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">
<p>Placeholder content for the tab panel. This one relates to the settings tab. Her love is like a drug. All my girls vintage Chanel baby. Got a motel and built a fort out of sheets. 'Cause she's the muse and the artist. (This is how we do) So you wanna play with magic. So just be sure before you give it all to me. I'm walking, I'm walking on air (tonight). Skip the talk, heard it all, time to walk the walk. Catch her if you can. Stinging like a bee I earned my stripes.</p>
</div>
</div>
</div>
</div>
```html
<div class="d-flex align-items-start">
<div class="nav flex-column nav-pills me-3" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-bs-toggle="pill" href="#v-pills-home" role="tab" aria-controls="v-pills-home" aria-selected="true">Home</a>
<a class="nav-link" id="v-pills-profile-tab" data-bs-toggle="pill" href="#v-pills-profile" role="tab" aria-controls="v-pills-profile" aria-selected="false">Profile</a>
<a class="nav-link" id="v-pills-messages-tab" data-bs-toggle="pill" href="#v-pills-messages" role="tab" aria-controls="v-pills-messages" aria-selected="false">Messages</a>
<a class="nav-link" id="v-pills-settings-tab" data-bs-toggle="pill" href="#v-pills-settings" role="tab" aria-controls="v-pills-settings" aria-selected="false">Settings</a>
</div>
<div class="tab-content" id="v-pills-tabContent">
<div class="tab-pane fade show active" id="v-pills-home" role="tabpanel" aria-labelledby="v-pills-home-tab">...</div>
<div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">...</div>
<div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">...</div>
<div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">...</div>
</div>
</div>
```
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### Using data attributes
You can activate a tab or pill navigation without writing any JavaScript by simply specifying `data-bs-toggle="tab"` or `data-bs-toggle="pill"` on an element. Use these data attributes on `.nav-tabs` or `.nav-pills`.
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```html
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<!-- Nav tabs -->
<ul class="nav nav-tabs" id="myTab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="home-tab" data-bs-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-bs-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="messages-tab" data-bs-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="settings-tab" data-bs-toggle="tab" href="#settings" role="tab" aria-controls="settings" aria-selected="false">Settings</a>
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</li>
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</ul>
<!-- Tab panes -->
<div class="tab-content">
<div class="tab-pane active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
<div class="tab-pane" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
<div class="tab-pane" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
<div class="tab-pane" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
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</div>
```
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### Via JavaScript
Enable tabbable tabs via JavaScript (each tab needs to be activated individually):
```js
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var triggerTabList = [].slice.call(document.querySelectorAll('#myTab a'))
triggerTabList.forEach(function (triggerEl) {
var tabTrigger = new bootstrap.Tab(triggerEl)
triggerEl.addEventListener('click', function (event) {
event.preventDefault()
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tabTrigger.show()
})
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})
```
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You can activate individual tabs in several ways:
```js
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var triggerEl = document.querySelector('#myTab a[href="#profile"]')
bootstrap.Tab.getInstance(triggerEl).show() // Select tab by name
var triggerFirstTabEl = document.querySelector('#myTab li:first-child a')
bootstrap.Tab.getInstance(triggerFirstTabEl).show() // Select first tab
```
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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 `.show` to make the initial content visible.
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```html
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<div class="tab-content">
<div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
<div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
<div class="tab-pane fade" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
<div class="tab-pane fade" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
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</div>
```
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### Methods
{{< callout danger >}}
{{< partial "callout-danger-async-methods.md" >}}
{{< /callout >}}
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#### constructor
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Activates a tab element and content container. Tab should have either a `data-bs-target` or an `href` targeting a container node in the DOM.
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```html
<ul class="nav nav-tabs" id="myTab" role="tablist">
<li class="nav-item" role="presentation">
<a class="nav-link active" id="home-tab" data-bs-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-bs-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="messages-tab" data-bs-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
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</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="settings-tab" data-bs-toggle="tab" href="#settings" role="tab" aria-controls="settings" aria-selected="false">Settings</a>
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</li>
</ul>
<div class="tab-content">
<div class="tab-pane active" id="home" role="tabpanel" aria-labelledby="home-tab">...</div>
<div class="tab-pane" id="profile" role="tabpanel" aria-labelledby="profile-tab">...</div>
<div class="tab-pane" id="messages" role="tabpanel" aria-labelledby="messages-tab">...</div>
<div class="tab-pane" id="settings" role="tabpanel" aria-labelledby="settings-tab">...</div>
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</div>
<script>
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var firstTabEl = document.querySelector('#myTab li:last-child a')
var firstTab = new bootstrap.Tab(firstTabEl)
firstTab.show()
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</script>
```
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#### 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).
```js
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var someTabTriggerEl = document.querySelector('#someTabTrigger')
var tab = new bootstrap.Tab(someTabTriggerEl)
tab.show()
```
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#### dispose
Destroys an element's tab.
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#### getInstance
*Static* method which allows you to get the tab instance associated with a DOM element
```js
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var triggerEl = document.querySelector('#trigger')
var tab = bootstrap.Tab.getInstance(triggerEl) // Returns a Bootstrap tab instance
```
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### 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.
v5: Forms update (#28450) * Initial spike of consolidated form checks * Stub out forms rearrangement - Prepping to drop non-custom file and range inputs - Prepping to merge custom and native checks and radios (with switches) - Prepping to merge custom select with form select - Moving docs arround so forms has it's own area given volume of CSS * Move input group Sass file to forms subdir * Start to split and move the docs around * Simpler imports * Copyediting * delete overview file * Remove commented out code * remove the custom-forms import * rewrite flex-check as form-check, replace all custom properties * Remove old forms doc * stub out new subpage link section * update migration guide * Update nav, forms overview in page nav, and descriptions * fix check bg position * fix margin-top calculation * rename .custom-select to .form-select * Update validation styles for new checks * add some vertical margin, fix inline checks * fix docs examples * better way to do this contents stuff, redo the toc while i'm at it * page restyle for docs while here * un-callout that, edit text * redo padding on toc * fix toc * start to cleanup checks docs * Rewrite Markdown tables into HTML * Redesign tables, redo their docs * Replace Open Iconic icons with custom Bootstrap icons * Redesign the docs navbar, add a subheader, redo the sidebar * Redesign docs homepage a bit * Simplify table style overrides for docs tables * Simplify docs typography for page titles and reading line length * Stub out icons page * Part of sidebar update, remove migration from nav.yml * Move toc CSS to separate partial * Change appearance of overview page * fix sidebar arrow direction * Add footer to docs layout * Update descriptions * Drop the .form-group class for margin utilities * Remove lingering form-group-margin-bottom var * improve footer spacing * add headings to range page * uncomment form range css * Rename .custom-range to .form-range * Drop unused docs var * Uncomment the comment * Remove unused variable * Fix radio image sizing * Reboot update: reset horizontal ul and ol padding * de-dupe IDs * tweak toc styles * nvm, fix dropdown versions stuff * remove sidebar nav toggle for now * broken html * fix more broken html, move css * scss linting * comment out broken helper docs * scope styles * scope styles * Fixes #25540 and fixes #26407 for v5 only * Update sidebar once more * Match new sidenav order * fix syntax error * Rename custom-file to form-file, update paths, update migration docs for previous changes in #28696 * rename back * fix size and alignment * rename that back too
2019-07-12 23:52:33 +02:00
<table class="table">
<thead>
<tr>
v5: Forms update (#28450) * Initial spike of consolidated form checks * Stub out forms rearrangement - Prepping to drop non-custom file and range inputs - Prepping to merge custom and native checks and radios (with switches) - Prepping to merge custom select with form select - Moving docs arround so forms has it's own area given volume of CSS * Move input group Sass file to forms subdir * Start to split and move the docs around * Simpler imports * Copyediting * delete overview file * Remove commented out code * remove the custom-forms import * rewrite flex-check as form-check, replace all custom properties * Remove old forms doc * stub out new subpage link section * update migration guide * Update nav, forms overview in page nav, and descriptions * fix check bg position * fix margin-top calculation * rename .custom-select to .form-select * Update validation styles for new checks * add some vertical margin, fix inline checks * fix docs examples * better way to do this contents stuff, redo the toc while i'm at it * page restyle for docs while here * un-callout that, edit text * redo padding on toc * fix toc * start to cleanup checks docs * Rewrite Markdown tables into HTML * Redesign tables, redo their docs * Replace Open Iconic icons with custom Bootstrap icons * Redesign the docs navbar, add a subheader, redo the sidebar * Redesign docs homepage a bit * Simplify table style overrides for docs tables * Simplify docs typography for page titles and reading line length * Stub out icons page * Part of sidebar update, remove migration from nav.yml * Move toc CSS to separate partial * Change appearance of overview page * fix sidebar arrow direction * Add footer to docs layout * Update descriptions * Drop the .form-group class for margin utilities * Remove lingering form-group-margin-bottom var * improve footer spacing * add headings to range page * uncomment form range css * Rename .custom-range to .form-range * Drop unused docs var * Uncomment the comment * Remove unused variable * Fix radio image sizing * Reboot update: reset horizontal ul and ol padding * de-dupe IDs * tweak toc styles * nvm, fix dropdown versions stuff * remove sidebar nav toggle for now * broken html * fix more broken html, move css * scss linting * comment out broken helper docs * scope styles * scope styles * Fixes #25540 and fixes #26407 for v5 only * Update sidebar once more * Match new sidenav order * fix syntax error * Rename custom-file to form-file, update paths, update migration docs for previous changes in #28696 * rename back * fix size and alignment * rename that back too
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<th style="width: 150px;">Event type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>show.bs.tab</code></td>
<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><code>shown.bs.tab</code></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><code>hide.bs.tab</code></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><code>hidden.bs.tab</code></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>
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```js
var tabEl = document.querySelector('a[data-bs-toggle="tab"]')
tabEl.addEventListener('shown.bs.tab', function (event) {
event.target // newly activated tab
event.relatedTarget // previous active tab
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})
```