Bootstrap/site/content/docs/4.3/components/tooltips.md

layout	title	description	group	toc
docs	Tooltips	Documentation and examples for adding custom Bootstrap tooltips with CSS and JavaScript using CSS3 for animations and data-attributes for local title storage.	components	true

Overview

Things to know when using the tooltip plugin:

• Tooltips rely on the 3rd party library Popper.js for positioning. You must include [popper.min.js]({{< param "cdn.popper" >}}) before bootstrap.js or use bootstrap.bundle.min.js / bootstrap.bundle.js which contains Popper.js in order for tooltips to work!
• Tooltips are opt-in for performance reasons, so you must initialize them yourself.
• Tooltips with zero-length titles are never displayed.
• Specify container: 'body' to avoid rendering problems in more complex components (like our input groups, button groups, etc).
• Triggering tooltips on hidden elements will not work.
• Tooltips for .disabled or disabled elements must be triggered on a wrapper element.
• When triggered from hyperlinks that span multiple lines, tooltips will be centered. Use white-space: nowrap; on your <a>s to avoid this behavior.
• Tooltips must be hidden before their corresponding elements have been removed from the DOM.
• Tooltips can be triggered thanks to an element inside a shadow DOM.

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Got all that? Great, let's see how they work with some examples.

Example: Enable tooltips everywhere

One way to initialize all tooltips on a page would be to select them by their data-toggle attribute:

{{< highlight js >}} var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-toggle="tooltip"]')) var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) { return new bootstrap.Tooltip(tooltipTriggerEl) }) {{< /highlight >}}

Examples

Hover over the links below to see tooltips:

Tight pants next level keffiyeh you probably haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel have a terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan whatever keytar, scenester farm-to-table banksy Austin twitter handle freegan cred raw denim single-origin coffee viral.

Hover over the buttons below to see the four tooltips directions: top, right, bottom, and left.

Tooltip on top Tooltip on right Tooltip on bottom Tooltip on left Tooltip with HTML

{{< highlight html >}} Tooltip on top Tooltip on right Tooltip on bottom Tooltip on left {{< /highlight >}}

And with custom HTML added:

{{< highlight html >}} Tooltip with HTML {{< /highlight >}}

Usage

The tooltip plugin generates content and markup on demand, and by default places tooltips after their trigger element.

Trigger the tooltip via JavaScript:

{{< highlight js >}} var exampleEl = document.getElementById('example') var tooltip = new bootstrap.Tooltip(exampleEl, options) {{< /highlight >}}

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Overflow auto and scroll

Tooltip position attempts to automatically change when a parent container has overflow: auto or overflow: scroll like our .table-responsive, but still keeps the original placement's positioning. To resolve, set the boundary option to anything other than default value, 'scrollParent', such as 'window':

{{< highlight js >}} var exampleEl = document.getElementById('example') var tooltip = new bootstrap.Tooltip(exampleEl, { boundary: 'window' }) {{< /highlight >}} {{< /callout >}}

Markup

The required markup for a tooltip is only a data attribute and title on the HTML element you wish to have a tooltip. The generated markup of a tooltip is rather simple, though it does require a position (by default, set to top by the plugin).

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Making tooltips work for keyboard and assistive technology users

You should only add tooltips to HTML elements that are traditionally keyboard-focusable and interactive (such as links or form controls). Although arbitrary HTML elements (such as <span>s) can be made focusable by adding the tabindex="0" attribute, this will add potentially annoying and confusing tab stops on non-interactive elements for keyboard users, and most assistive technologies currently do not announce the tooltip in this situation. Additionally, do not rely solely on hover as the trigger for your tooltip, as this will make your tooltips impossible to trigger for keyboard users. {{< /callout >}}

{{< highlight html >}}

Hover over me

Some tooltip text!

{{< /highlight >}}

Disabled elements

Elements with the disabled attribute aren't interactive, meaning users cannot focus, hover, or click them to trigger a tooltip (or popover). As a workaround, you'll want to trigger the tooltip from a wrapper <div> or <span>, ideally made keyboard-focusable using tabindex="0", and override the pointer-events on the disabled element.

{{< example >}} Disabled button {{< /example >}}

Options

Options can be passed via data attributes or JavaScript. For data attributes, append the option name to data-, as in data-animation="".

{{< callout warning >}} Note that for security reasons the sanitize, sanitizeFn and whiteList options cannot be supplied using data attributes. {{< /callout >}}

Name	Type	Default	Description
animation	boolean	true	Apply a CSS fade transition to the tooltip
container	string | element | false	false	Appends the tooltip to a specific element. Example: container: 'body'. This option is particularly useful in that it allows you to position the tooltip in the flow of the document near the triggering element - which will prevent the tooltip from floating away from the triggering element during a window resize.
delay	number | object	0	Delay showing and hiding the tooltip (ms) - does not apply to manual trigger type If a number is supplied, delay is applied to both hide/show Object structure is: delay: { "show": 500, "hide": 100 }
html	boolean	false	Allow HTML in the tooltip. If true, HTML tags in the tooltip's title will be rendered in the tooltip. If false, innerText property will be used to insert content into the DOM. Use text if you're worried about XSS attacks.
placement	string | function	'top'	How to position the tooltip - auto | top | bottom | left | right. When auto is specified, it will dynamically reorient the tooltip. When a function is used to determine the placement, it is called with the tooltip DOM node as its first argument and the triggering element DOM node as its second. The this context is set to the tooltip instance.
selector	string | false	false	If a selector is provided, tooltip objects will be delegated to the specified targets. In practice, this is used to also apply tooltips to dynamically added DOM elements (jQuery.on support). See this and an informative example.
template	string	'<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>'	Base HTML to use when creating the tooltip. The tooltip's title will be injected into the .tooltip-inner. .tooltip-arrow will become the tooltip's arrow. The outermost wrapper element should have the .tooltip class and role="tooltip".
title	string | element | function	''	Default title value if title attribute isn't present. If a function is given, it will be called with its this reference set to the element that the tooltip is attached to.
trigger	string	'hover focus'	How tooltip is triggered - click | hover | focus | manual. You may pass multiple triggers; separate them with a space. 'manual' indicates that the tooltip will be triggered programmatically via the .tooltip('show'), .tooltip('hide') and .tooltip('toggle') methods; this value cannot be combined with any other trigger. 'hover' on its own will result in tooltips that cannot be triggered via the keyboard, and should only be used if alternative methods for conveying the same information for keyboard users is present.
offset	number | string | function	0	Offset of the tooltip relative to its target. When a function is used to determine the offset, it is called with an object containing the offset data as its first argument. The function must return an object with the same structure. The triggering element DOM node is passed as the second argument. For more information refer to Popper.js's offset docs.
fallbackPlacement	string | array	'flip'	Allow to specify which position Popper will use on fallback. For more information refer to Popper.js's behavior docs
boundary	string | element	'scrollParent'	Overflow constraint boundary of the tooltip. Accepts the values of 'viewport', 'window', 'scrollParent', or an HTMLElement reference (JavaScript only). For more information refer to Popper.js's preventOverflow docs.
sanitize	boolean	true	Enable or disable the sanitization. If activated 'template' and 'title' options will be sanitized.
whiteList	object	}}">Default value	Object which contains allowed attributes and tags
sanitizeFn	null | function	null	Here you can supply your own sanitize function. This can be useful if you prefer to use a dedicated library to perform sanitization.
popperConfig	null | object	null	To change Bootstrap's default Popper.js config, see Popper.js's configuration

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Data attributes for individual tooltips

Options for individual tooltips can alternatively be specified through the use of data attributes, as explained above. {{< /callout >}}

Methods

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show

Reveals an element's tooltip. Returns to the caller before the tooltip has actually been shown (i.e. before the shown.bs.tooltip event occurs). This is considered a "manual" triggering of the tooltip. Tooltips with zero-length titles are never displayed.

{{< highlight js >}}tooltip.show(){{< /highlight >}}

hide

Hides an element's tooltip. Returns to the caller before the tooltip has actually been hidden (i.e. before the hidden.bs.tooltip event occurs). This is considered a "manual" triggering of the tooltip.

{{< highlight js >}}tooltip.hide(){{< /highlight >}}

toggle

Toggles an element's tooltip. Returns to the caller before the tooltip has actually been shown or hidden (i.e. before the shown.bs.tooltip or hidden.bs.tooltip event occurs). This is considered a "manual" triggering of the tooltip.

{{< highlight js >}}tooltip.toggle(){{< /highlight >}}

dispose

Hides and destroys an element's tooltip. Tooltips that use delegation (which are created using the selector option) cannot be individually destroyed on descendant trigger elements.

{{< highlight js >}}tooltip.dispose(){{< /highlight >}}

enable

Gives an element's tooltip the ability to be shown. Tooltips are enabled by default.

{{< highlight js >}}tooltip.enable(){{< /highlight >}}

disable

Removes the ability for an element's tooltip to be shown. The tooltip will only be able to be shown if it is re-enabled.

{{< highlight js >}}tooltip.disable(){{< /highlight >}}

toggleEnabled

Toggles the ability for an element's tooltip to be shown or hidden.

{{< highlight js >}}tooltip.toggleEnabled(){{< /highlight >}}

update

Updates the position of an element's tooltip.

{{< highlight js >}}tooltip.update(){{< /highlight >}}

Events

Event type	Description
show.bs.tooltip	This event fires immediately when the show instance method is called.
shown.bs.tooltip	This event is fired when the tooltip has been made visible to the user (will wait for CSS transitions to complete).
hide.bs.tooltip	This event is fired immediately when the hide instance method has been called.
hidden.bs.tooltip	This event is fired when the tooltip has finished being hidden from the user (will wait for CSS transitions to complete).
inserted.bs.tooltip	This event is fired after the show.bs.tooltip event when the tooltip template has been added to the DOM.

{{< highlight js >}} var myTooltipEl = document.getElementById('myTooltip') var tooltip = new bootstrap.Tooltip(myTooltipEl)

myTooltipEl.addEventListener('hidden.bs.tooltip', function () { // do something... })

tooltip.hide() {{< /highlight >}}