// do something...
Programmatic API
All constructors accept an optional options object or nothing (which initiates a plugin with its default behavior):
var myModalEl = document.getElementById('myModal')
var modal = new bootstrap.Modal(myModalEl) // initialized with defaults
var modal = new bootstrap.Modal(myModalEl, { keyboard: false }) // initialized with no keyboard
If you’d like to get a particular plugin instance, each plugin exposes a getInstance method. In order to retrieve it directly from an element, do this: bootstrap.Popover.getInstance(myPopoverEl).
CSS selectors in constructors
You can also use a CSS selector as the first argument instead of a DOM element to initialize the plugin. Currently the element for the plugin is found by the querySelector method since our plugins support a single element only.
var modal = new bootstrap.Modal('#myModal')
var dropdown = new bootstrap.Dropdown('[data-bs-toggle="dropdown"]')
Asynchronous functions and transitions
All programmatic API methods are asynchronous and return to the caller once the transition is started but before it ends.
In order to execute an action once the transition is complete, you can listen to the corresponding event.
var myCollapseEl = document.getElementById('myCollapse')
myCollapseEl.addEventListener('shown.bs.collapse', function (event) {
// Action to execute once the collapsible area is expanded
In addition a method call on a transitioning component will be ignored.
var myCarouselEl = document.getElementById('myCarousel')
var carousel = bootstrap.Carousel.getInstance(myCarouselEl) // Retrieve a Carousel instance
myCarouselEl.addEventListener('slid.bs.carousel', function (event) {
carousel.to('2') // Will slide to the slide 2 as soon as the transition to slide 1 is finished
carousel.to('1') // Will start sliding to the slide 1 and returns to the caller
carousel.to('2') // !! Will be ignored, as the transition to the slide 1 is not finished !!
Default settings
You can change the default settings for a plugin by modifying the plugin’s Constructor.Default object:
// changes default for the modal plugin's `keyboard` option to false
bootstrap.Modal.Default.keyboard = false
No conflict (only if you use jQuery)
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.
var bootstrapButton = $.fn.button.noConflict() // return $.fn.button to previously assigned value
$.fn.bootstrapBtn = bootstrapButton // give $().bootstrapBtn the Bootstrap functionality
Version numbers
The version of each of Bootstrap’s plugins can be accessed via the VERSION property of the plugin’s constructor. For example, for the tooltip plugin:
bootstrap.Tooltip.VERSION // => "5.0.2"
No special fallbacks when JavaScript is disabled
Bootstrap’s plugins don’t fall back particularly gracefully when JavaScript is disabled. If you care about the user experience in this case, use <noscript> to explain the situation (and how to re-enable JavaScript) to your users, and/or add your own custom fallbacks.
Third-party libraries
Bootstrap does not officially support third-party JavaScript libraries like Prototype or jQuery UI. Despite .noConflict and namespaced events, there may be compatibility problems that you need to fix on your own.
Sanitizer
Tooltips and Popovers use our built-in sanitizer to sanitize options which accept HTML.
The default allowList value is the following:
var ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i
var DefaultAllowlist = {
// Global attributes allowed on any supplied element below.
'*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
a: ['target', 'href', 'title', 'rel'],
area: [],
b: [],
br: [],
col: [],
code: [],
div: [],
em: [],
hr: [],
h1: [],
h2: [],
h3: [],
h4: [],
h5: [],
h6: [],
i: [],
img: ['src', 'srcset', 'alt', 'title', 'width', 'height'],
li: [],
ol: [],
p: [],
pre: [],
s: [],
small: [],
span: [],
sub: [],
sup: [],
strong: [],
u: [],
ul: []
If you want to add new values to this default allowList you can do the following:
var myDefaultAllowList = bootstrap.Tooltip.Default.allowList
// To allow table elements
myDefaultAllowList.table = []
// To allow td elements and data-bs-option attributes on td elements
myDefaultAllowList.td = ['data-bs-option']
// You can push your custom regex to validate your attributes.
// Be careful about your regular expressions being too lax
var myCustomRegex = /^data-my-app-[\w-]+/
myDefaultAllowList['*'].push(myCustomRegex)
If you want to bypass our sanitizer because you prefer to use a dedicated library, for example DOMPurify, you should do the following:
