Overview

Individual or compiled

Plugins can be included individually (using Bootstrap's individual *.js files), or all at once (using bootstrap.js or the minified bootstrap.min.js).

Using the compiled JavaScript

Both bootstrap.js and bootstrap.min.js contain all plugins in a single file. Include only one.

Component data attributes

Don't use data attributes from multiple plugins on the same element. For example, a button cannot both have a tooltip and toggle a modal. To accomplish this, use a wrapping element.

Plugin dependencies

Some plugins and CSS components depend on other plugins. If you include plugins individually, make sure to check for these dependencies in the docs. Also note that all plugins depend on jQuery (this means jQuery must be included before the plugin files). Consult our bower.json to see which versions of jQuery are supported.

Data attributes

You can use all Bootstrap plugins purely through the markup API without writing a single line of JavaScript. This is Bootstrap's first-class API and should be your first consideration when using a plugin.

That said, in some situations it may be desirable to turn this functionality off. Therefore, we also provide the ability to disable the data attribute API by unbinding all events on the document namespaced with data-api. This looks like this:

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$(document).off('.data-api')

Alternatively, to target a specific plugin, just include the plugin's name as a namespace along with the data-api namespace like this:

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$(document).off('.alert.data-api')

Programmatic API

We also believe you should be able to use all Bootstrap plugins purely through the JavaScript API. All public APIs are single, chainable methods, and return the collection acted upon.

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$('.btn.danger').button('toggle').addClass('fat')

All methods should accept an optional options object, a string which targets a particular method, or nothing (which initiates a plugin with default behavior):

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$('#myModal').modal() // initialized with defaults $('#myModal').modal({ keyboard: false }) // initialized with no keyboard $('#myModal').modal('show') // initializes and invokes show immediately

Each plugin also exposes its raw constructor on a Constructor property: $.fn.popover.Constructor. If you'd like to get a particular plugin instance, retrieve it directly from an element: $('[rel="popover"]').data('popover').

No conflict

Sometimes it is necessary to use Bootstrap plugins with other UI frameworks. In these circumstances, namespace collisions can occasionally occur. If this happens, you may call .noConflict on the plugin you wish to revert the value of.

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var bootstrapButton = $.fn.button.noConflict() // return $.fn.button to previously assigned value $.fn.bootstrapBtn = bootstrapButton // give $().bootstrapBtn the Bootstrap functionality

Events

Bootstrap provides custom events for most plugins' unique actions. Generally, these come in an infinitive and past participle form - where the infinitive (ex. show) is triggered at the start of an event, and its past participle form (ex. shown) is triggered on the completion of an action.

As of 3.0.0, all Bootstrap events are namespaced.

All infinitive events provide preventDefault functionality. This provides the ability to stop the execution of an action before it starts.

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$('#myModal').on('show.bs.modal', function (e) { if (!data) return e.preventDefault() // stops modal from being shown })

Third-party libraries

Bootstrap does not officially support third-party JavaScript libraries like Prototype or jQuery UI. Despite .noConflict and namespaced events, there may be compatibility problems that you need to fix on your own.

Transitions transition.js

About transitions

For simple transition effects, include transition.js once alongside the other JS files. If you're using the compiled (or minified) bootstrap.js, there is no need to include this—it's already there.

What's inside

Transition.js is a basic helper for transitionEnd events as well as a CSS transition emulator. It's used by the other plugins to check for CSS transition support and to catch hanging transitions.

Modals modal.js

Examples

Modals are streamlined, but flexible, dialog prompts with the minimum required functionality and smart defaults.

Overlapping modals not supported

Be sure not to open a modal while another is still visible. Showing more than one modal at a time requires custom code.

Modal markup placement

Always try to place a modal's HTML code in a top-level position in your document to avoid other components affecting the modal's appearance and/or functionality.

Mobile device caveats

There are some caveats regarding using modals on mobile devices. See our browser support docs for details.

Static example

A rendered modal with header, body, and set of actions in the footer.

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 class="modal fade">  class="modal-dialog">  class="modal-content">  class="modal-header">  type="button" class="close" data-dismiss="modal"> aria-hidden="true">× class="sr-only">Close  class="modal-title">Modal title 
class="modal-body">

One fine body

class="modal-footer"> type="button" class="btn btn-default" data-dismiss="modal">Close type="button" class="btn btn-primary">Save changes