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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-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-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
2015-04-18 05:59:22 +02:00
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-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
2015-04-18 05:59:22 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
2015-04-18 05:59:22 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
2015-04-18 05:59:22 +02:00
</li>
</ul>
<div class="tab-content" id="myTabContent">
<div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">
2015-04-18 05:59:22 +02:00
<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>
</div>
<div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">
2015-04-18 05:59:22 +02:00
<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>
</div>
<div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">
2015-04-18 05:59:22 +02:00
<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>
</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-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-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-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-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-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-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>Et et consectetur ipsum labore excepteur est proident excepteur ad velit occaecat qui minim occaecat veniam. Fugiat veniam incididunt anim aliqua enim pariatur veniam sunt est aute sit dolor anim. Velit non irure adipisicing aliqua ullamco irure incididunt irure non esse consectetur nostrud minim non minim occaecat. Amet duis do nisi duis veniam non est eiusmod tempor incididunt tempor dolor ipsum in qui sit. Exercitation mollit sit culpa nisi culpa non adipisicing reprehenderit do dolore. Duis reprehenderit occaecat anim ullamco ad duis occaecat ex.</p>
</div>
<div class="tab-pane fade" id="nav-profile" role="tabpanel" aria-labelledby="nav-profile-tab">
<p>Nulla est ullamco ut irure incididunt nulla Lorem Lorem minim irure officia enim reprehenderit. Magna duis labore cillum sint adipisicing exercitation ipsum. Nostrud ut anim non exercitation velit laboris fugiat cupidatat. Commodo esse dolore fugiat sint velit ullamco magna consequat voluptate minim amet aliquip ipsum aute laboris nisi. Labore labore veniam irure irure ipsum pariatur mollit magna in cupidatat dolore magna irure esse tempor ad mollit. Dolore commodo nulla minim amet ipsum officia consectetur amet ullamco voluptate nisi commodo ea sit eu.</p>
</div>
<div class="tab-pane fade" id="nav-contact" role="tabpanel" aria-labelledby="nav-contact-tab">
<p>Sint sit mollit irure quis est nostrud cillum consequat Lorem esse do quis dolor esse fugiat sunt do. Eu ex commodo veniam Lorem aliquip laborum occaecat qui Lorem esse mollit dolore anim cupidatat. Deserunt officia id Lorem nostrud aute id commodo elit eiusmod enim irure amet eiusmod qui reprehenderit nostrud tempor. Fugiat ipsum excepteur in aliqua non et quis aliquip ad irure in labore cillum elit enim. Consequat aliquip incididunt ipsum et minim laborum laborum laborum et cillum labore. Deserunt adipisicing cillum id nulla minim nostrud labore eiusmod et amet. Laboris consequat consequat commodo non ut non aliquip reprehenderit nulla anim occaecat. Sunt sit ullamco reprehenderit irure ea ullamco Lorem aute nostrud magna.</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-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-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-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-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-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-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>Consequat occaecat ullamco amet non eiusmod nostrud dolore irure incididunt est duis anim sunt officia. Fugiat velit proident aliquip nisi incididunt nostrud exercitation proident est nisi. Irure magna elit commodo anim ex veniam culpa eiusmod id nostrud sit cupidatat in veniam ad. Eiusmod consequat eu adipisicing minim anim aliquip cupidatat culpa excepteur quis. Occaecat sit eu exercitation irure Lorem incididunt nostrud.</p>
</div>
<div class="tab-pane fade" id="pills-profile" role="tabpanel" aria-labelledby="pills-profile-tab">
<p>Ad pariatur nostrud pariatur exercitation ipsum ipsum culpa mollit commodo mollit ex. Aute sunt incididunt amet commodo est sint nisi deserunt pariatur do. Aliquip ex eiusmod voluptate exercitation cillum id incididunt elit sunt. Qui minim sit magna Lorem id et dolore velit Lorem amet exercitation duis deserunt. Anim id labore elit adipisicing ut in id occaecat pariatur ut ullamco ea tempor duis.</p>
</div>
<div class="tab-pane fade" id="pills-contact" role="tabpanel" aria-labelledby="pills-contact-tab">
<p>Est quis nulla laborum officia ad nisi ex nostrud culpa Lorem excepteur aliquip dolor aliqua irure ex. Nulla ut duis ipsum nisi elit fugiat commodo sunt reprehenderit laborum veniam eu veniam. Eiusmod minim exercitation fugiat irure ex labore incididunt do fugiat commodo aliquip sit id deserunt reprehenderit aliquip nostrud. Amet ex cupidatat excepteur aute veniam incididunt mollit cupidatat esse irure officia elit do ipsum ullamco Lorem. Ullamco ut ad minim do mollit labore ipsum laboris ipsum commodo sunt tempor enim incididunt. Commodo quis sunt dolore aliquip aute tempor irure magna enim minim reprehenderit. Ullamco consectetur culpa veniam sint cillum aliqua incididunt velit ullamco sunt ullamco quis quis commodo voluptate. Mollit nulla nostrud adipisicing aliqua cupidatat aliqua pariatur mollit voluptate voluptate consequat non.</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-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-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-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 mr-3" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-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-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-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-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>Cillum ad ut irure tempor velit nostrud occaecat ullamco aliqua anim Lorem sint. Veniam sint duis incididunt do esse magna mollit excepteur laborum qui. Id id reprehenderit sit est eu aliqua occaecat quis et velit excepteur laborum mollit dolore eiusmod. Ipsum dolor in occaecat commodo et voluptate minim reprehenderit mollit pariatur. Deserunt non laborum enim et cillum eu deserunt excepteur ea incididunt minim occaecat.</p>
</div>
<div class="tab-pane fade" id="v-pills-profile" role="tabpanel" aria-labelledby="v-pills-profile-tab">
<p>Culpa dolor voluptate do laboris laboris irure reprehenderit id incididunt duis pariatur mollit aute magna pariatur consectetur. Eu veniam duis non ut dolor deserunt commodo et minim in quis laboris ipsum velit id veniam. Quis ut consectetur adipisicing officia excepteur non sit. Ut et elit aliquip labore Lorem enim eu. Ullamco mollit occaecat dolore ipsum id officia mollit qui esse anim eiusmod do sint minim consectetur qui.</p>
</div>
<div class="tab-pane fade" id="v-pills-messages" role="tabpanel" aria-labelledby="v-pills-messages-tab">
<p>Fugiat id quis dolor culpa eiusmod anim velit excepteur proident dolor aute qui magna. Ad proident laboris ullamco esse anim Lorem Lorem veniam quis Lorem irure occaecat velit nostrud magna nulla. Velit et et proident Lorem do ea tempor officia dolor. Reprehenderit Lorem aliquip labore est magna commodo est ea veniam consectetur.</p>
</div>
<div class="tab-pane fade" id="v-pills-settings" role="tabpanel" aria-labelledby="v-pills-settings-tab">
<p>Eu dolore ea ullamco dolore Lorem id cupidatat excepteur reprehenderit consectetur elit id dolor proident in cupidatat officia. Voluptate excepteur commodo labore nisi cillum duis aliqua do. Aliqua amet qui mollit consectetur nulla mollit velit aliqua veniam nisi id do Lorem deserunt amet. Culpa ullamco sit adipisicing labore officia magna elit nisi in aute tempor commodo eiusmod.</p>
</div>
</div>
</div>
</div>
```html
<div class="d-flex align-items-start">
<div class="nav flex-column nav-pills mr-3" id="v-pills-tab" role="tablist" aria-orientation="vertical">
<a class="nav-link active" id="v-pills-home-tab" data-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-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-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-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>
```
2015-04-18 05:59:22 +02:00
### 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`.
```html
2015-04-18 05:59:22 +02:00
<!-- 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-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
2015-08-13 06:12:03 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
2015-08-13 06:12:03 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="messages-tab" data-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
2015-08-13 06:12:03 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="settings-tab" data-toggle="tab" href="#settings" role="tab" aria-controls="settings" aria-selected="false">Settings</a>
2015-08-13 06:12:03 +02:00
</li>
2015-04-18 05:59:22 +02:00
</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>
2015-04-18 05:59:22 +02:00
</div>
```
2015-04-18 05:59:22 +02:00
### Via JavaScript
Enable tabbable tabs via JavaScript (each tab needs to be activated individually):
```js
2019-07-31 21:55:28 +02:00
var triggerTabList = [].slice.call(document.querySelectorAll('#myTab a'))
triggerTabList.forEach(function (triggerEl) {
var tabTrigger = new bootstrap.Tab(triggerEl)
triggerEl.addEventListener('click', function (e) {
e.preventDefault()
tabTrigger.show()
})
2015-04-18 05:59:22 +02:00
})
```
2015-04-18 05:59:22 +02:00
You can activate individual tabs in several ways:
```js
2019-07-31 21:55:28 +02:00
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
```
2015-04-18 05:59:22 +02:00
### Fade effect
2016-10-28 00:50:23 +02:00
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.
2015-04-18 05:59:22 +02:00
```html
2015-04-18 05:59:22 +02:00
<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>
2015-04-18 05:59:22 +02:00
</div>
```
2015-04-18 05:59:22 +02:00
### Methods
{{< callout danger >}}
{{< partial "callout-danger-async-methods.md" >}}
{{< /callout >}}
2019-07-31 21:55:28 +02:00
#### constructor
2015-04-18 05:59:22 +02:00
Activates a tab element and content container. Tab should have either a `data-target` or an `href` targeting a container node in the DOM.
```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-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
2015-04-18 05:59:22 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
2015-04-18 05:59:22 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="messages-tab" data-toggle="tab" href="#messages" role="tab" aria-controls="messages" aria-selected="false">Messages</a>
2015-04-18 05:59:22 +02:00
</li>
<li class="nav-item" role="presentation">
<a class="nav-link" id="settings-tab" data-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
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var tabEl = document.querySelector('a[data-toggle="tab"]')
tabEl.addEventListener('shown.bs.tab', function (e) {
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e.target // newly activated tab
e.relatedTarget // previous active tab
})
```