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Bootstrap/docs/components/carousel.md

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---
layout: docs
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title: Carousel
description: A slideshow component for cycling through elements—images or slides of text—like a carousel.
group: components
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---
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The carousel is a slideshow for cycling through a series of content, built with CSS 3D transforms and a bit of JavaScript. It works with a series of images, text, or custom markup. It also includes support for previous/next controls and indicators.
In browsers where the [Page Visibility API](https://www.w3.org/TR/page-visibility/) is supported, the carousel will avoid sliding when the webpage is not visible to the user (such as when the browser tab is inactive, the browser window is minimized, etc.).
Please be aware that nested carousels are not supported, and carousels are generally not compliant with accessibility standards.
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## Contents
* Will be replaced with the ToC, excluding the "Contents" header
{:toc}
## Example
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Carousels don't automatically normalize slide dimensions. As such, you may need to use additional utilities or custom styles to appropriately size content. While carousels support previous/next controls and indicators, they're not explicitly required. Add and customize as you see fit.
Be sure to set a unique id on the `.carousel` for optional controls, especially if you're using multiple carousels on a single page.
### Slides only
Here's a carousel with slides only. Note the presence of the `.d-block` and `.img-fluid` on carousel images to prevent browser default image alignment.
{% example html %}
<div id="carouselExampleSlidesOnly" class="carousel slide" data-ride="carousel">
<div class="carousel-inner" role="listbox">
<div class="carousel-item active">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
</div>
</div>
</div>
{% endexample %}
### With controls
Adding in the previous and next controls:
{% example html %}
<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
<div class="carousel-inner" role="listbox">
<div class="carousel-item active">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
</div>
</div>
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<a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
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<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
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<a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
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<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
{% endexample %}
### With indicators
You can also add the indicators to the carousel, alongside the controls, too.
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{% example html %}
<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
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<ol class="carousel-indicators">
<li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
<li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
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</ol>
<div class="carousel-inner" role="listbox">
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<div class="carousel-item active">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
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</div>
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<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
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</div>
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<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
</div>
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</div>
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<a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
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<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
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</a>
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<a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
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<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
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</a>
</div>
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{% endexample %}
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{% callout warning %}
#### Initial active element required
The `.active` class needs to be added to one of the slides. Otherwise, the carousel will not be visible.
{% endcallout %}
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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### With captions
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Add captions to your slides easily with the `.carousel-caption` element within any `.carousel-item`. They can be easily hidden on smaller viewports, as shown below, with optional [display utilities]({{ site.baseurl }}/utilities/display-property/). We hide them initially with `.d-none` and bring them back on medium-sized devices with `.d-md-block`.
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<div class="bd-example">
<div id="carouselExampleCaptions" class="carousel slide" data-ride="carousel">
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<ol class="carousel-indicators">
<li data-target="#carouselExampleCaptions" data-slide-to="0" class="active"></li>
<li data-target="#carouselExampleCaptions" data-slide-to="1"></li>
<li data-target="#carouselExampleCaptions" data-slide-to="2"></li>
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</ol>
<div class="carousel-inner" role="listbox">
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<div class="carousel-item active">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=777&fg=555&text=First slide" alt="First slide">
<div class="carousel-caption d-none d-md-block">
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<h3>First slide label</h3>
<p>Nulla vitae elit libero, a pharetra augue mollis interdum.</p>
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</div>
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</div>
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<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=666&fg=444&text=Second slide" alt="Second slide">
<div class="carousel-caption d-none d-md-block">
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<h3>Second slide label</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
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</div>
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</div>
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<div class="carousel-item">
<img class="d-block img-fluid" data-src="holder.js/800x400?auto=yes&bg=555&fg=333&text=Third slide" alt="Third slide">
<div class="carousel-caption d-none d-md-block">
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<h3>Third slide label</h3>
<p>Praesent commodo cursus magna, vel scelerisque nisl consectetur.</p>
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</div>
</div>
</div>
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<a class="carousel-control-prev" href="#carouselExampleCaptions" role="button" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
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<span class="sr-only">Previous</span>
</a>
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<a class="carousel-control-next" href="#carouselExampleCaptions" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
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<span class="sr-only">Next</span>
</a>
</div>
</div>
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{% highlight html %}
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<div class="carousel-item">
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<img src="..." alt="...">
<div class="carousel-caption d-none d-md-block">
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<h3>...</h3>
<p>...</p>
</div>
</div>
{% endhighlight %}
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## Usage
### Via data attributes
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Use data attributes to easily control the position of the carousel. `data-slide` accepts the keywords `prev` or `next`, which alters the slide position relative to its current position. Alternatively, use `data-slide-to` to pass a raw slide index to the carousel `data-slide-to="2"`, which shifts the slide position to a particular index beginning with `0`.
The `data-ride="carousel"` attribute is used to mark a carousel as animating starting at page load. **It cannot be used in combination with (redundant and unnecessary) explicit JavaScript initialization of the same carousel.**
### Via JavaScript
Call carousel manually with:
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{% highlight js %}
$('.carousel').carousel()
{% endhighlight %}
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### Options
Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-interval=""`.
<table class="table table-bordered table-striped table-responsive">
<thead>
<tr>
<th style="width: 100px;">Name</th>
<th style="width: 50px;">Type</th>
<th style="width: 50px;">Default</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>interval</td>
<td>number</td>
<td>5000</td>
<td>The amount of time to delay between automatically cycling an item. If false, carousel will not automatically cycle.</td>
</tr>
<tr>
<td>keyboard</td>
<td>boolean</td>
<td>true</td>
<td>Whether the carousel should react to keyboard events.</td>
</tr>
<tr>
<td>pause</td>
<td>string | boolean</td>
<td>"hover"</td>
<td>If set to <code>"hover"</code>, pauses the cycling of the carousel on <code>mouseenter</code> and resumes the cycling of the carousel on <code>mouseleave</code>. If set to <code>false</code>, hovering over the carousel won't pause it.</td>
</tr>
<tr>
<td>ride</td>
<td>string</td>
<td>false</td>
<td>Autoplays the carousel after the user manually cycles the first item. If "carousel", autoplays the carousel on load.</td>
</tr>
<tr>
<td>wrap</td>
<td>boolean</td>
<td>true</td>
<td>Whether the carousel should cycle continuously or have hard stops.</td>
</tr>
</tbody>
</table>
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### Methods
#### `.carousel(options)`
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Initializes the carousel with an optional options `object` and starts cycling through items.
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{% highlight js %}
$('.carousel').carousel({
interval: 2000
})
{% endhighlight %}
#### `.carousel('cycle')`
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Cycles through the carousel items from left to right.
#### `.carousel('pause')`
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Stops the carousel from cycling through items.
#### `.carousel(number)`
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Cycles the carousel to a particular frame (0 based, similar to an array).
#### `.carousel('prev')`
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Cycles to the previous item.
#### `.carousel('next')`
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Cycles to the next item.
### Events
Bootstrap's carousel class exposes two events for hooking into carousel functionality. Both events have the following additional properties:
- `direction`: The direction in which the carousel is sliding (either `"left"` or `"right"`).
- `relatedTarget`: The DOM element that is being slid into place as the active item.
- `from`: The index of the current item
- `to`: The index of the next item
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Merge branch 'master' into v4 Conflicts: .travis.yml Gruntfile.js bower.json dist/css/bootstrap.css dist/css/bootstrap.css.map dist/css/bootstrap.min.css dist/js/bootstrap.js dist/js/bootstrap.min.js docs/_data/glyphicons.yml docs/_includes/components/breadcrumbs.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/labels.html docs/_includes/components/list-group.html docs/_includes/components/media.html docs/_includes/components/navs.html docs/_includes/components/panels.html docs/_includes/components/progress-bars.html docs/_includes/components/thumbnails.html docs/_includes/components/wells.html docs/_includes/css/buttons.html docs/_includes/css/forms.html docs/_includes/css/helpers.html docs/_includes/css/images.html docs/_includes/css/less.html docs/_includes/customizer-variables.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/examples.html docs/_includes/getting-started/grunt.html docs/_includes/getting-started/license.html docs/_includes/getting-started/template.html docs/_includes/header.html docs/_includes/js/affix.html docs/_includes/js/alerts.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/popovers.html docs/_includes/js/scrollspy.html docs/_includes/js/tabs.html docs/_includes/js/tooltips.html docs/_includes/js/transitions.html docs/_includes/nav/javascript.html docs/_layouts/default.html docs/assets/css/docs.min.css docs/assets/css/src/docs.css docs/assets/js/customize.min.js docs/assets/js/docs.min.js docs/assets/js/raw-files.min.js docs/assets/js/vendor/FileSaver.js docs/assets/js/vendor/autoprefixer.js docs/assets/js/vendor/uglify.min.js docs/dist/css/bootstrap.css docs/dist/css/bootstrap.css.map docs/dist/css/bootstrap.min.css docs/dist/js/bootstrap.min.js docs/examples/blog/index.html docs/examples/carousel/index.html docs/examples/cover/index.html docs/examples/dashboard/index.html docs/examples/narrow-jumbotron/narrow-jumbotron.css docs/examples/navbar-fixed-top/index.html docs/examples/navbar-static-top/index.html docs/examples/non-responsive/index.html docs/examples/non-responsive/non-responsive.css docs/examples/theme/index.html grunt/configBridge.json js/affix.js js/carousel.js js/collapse.js js/dropdown.js js/modal.js js/popover.js js/scrollspy.js js/tab.js js/tests/unit/affix.js js/tests/unit/button.js js/tests/unit/carousel.js js/tests/unit/modal.js js/tests/unit/tooltip.js js/tooltip.js less/badges.less less/glyphicons.less less/type.less less/variables.less package.json scss/_dropdown.scss scss/_forms.scss test-infra/npm-shrinkwrap.json
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All carousel events are fired at the carousel itself (i.e. at the `<div class="carousel">`).
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<table class="table table-bordered table-striped table-responsive">
<thead>
<tr>
<th style="width: 150px;">Event Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>slide.bs.carousel</td>
<td>This event fires immediately when the <code>slide</code> instance method is invoked.</td>
</tr>
<tr>
<td>slid.bs.carousel</td>
<td>This event is fired when the carousel has completed its slide transition.</td>
</tr>
</tbody>
</table>
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{% highlight js %}
$('#myCarousel').on('slide.bs.carousel', function () {
// do something…
})
{% endhighlight %}