tooltips.md

---
layout: docs
title: Tooltips
group: components
---

Inspired by the excellent Tipsy jQuery plugin written by Jason Frame. Tooltips are an updated version, which don't rely on images, use CSS3 for animations, and data-attributes for local title storage.

## Contents

* Will be replaced with the ToC, excluding the "Contents" header
{:toc}

## Overview

Things to know when using the tooltip plugin:

- Tooltips rely on the 3rd party library [Tether](http://github.hubspot.com/tether/) for positioning. You must include [tether.min.js](https://github.com/HubSpot/tether/blob/master/dist/js/tether.min.js) before bootstrap.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.

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 %}
$(function () {
  $('[data-toggle="tooltip"]').tooltip()
})
{% endhighlight %}

## Examples

Hover over the links below to see tooltips:

<div class="bd-example tooltip-demo">
  <p class="muted">Tight pants next level keffiyeh <a href="#" data-toggle="tooltip" title="Default tooltip">you probably</a> 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 <a href="#" data-toggle="tooltip" title="Another tooltip">have a</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 <a href="#" data-toggle="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" data-toggle="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.
  </p>
</div>

### Static demo

Four options are available: top, right, bottom, and left aligned.

<div class="bd-example bd-example-tooltip-static">
  <div class="tooltip tooltip-top" role="tooltip">
    <div class="tooltip-arrow"></div>
    <div class="tooltip-inner">
      Tooltip on the top
    </div>
  </div>
  <div class="tooltip tooltip-right" role="tooltip">
    <div class="tooltip-arrow"></div>
    <div class="tooltip-inner">
      Tooltip on the right
    </div>
  </div>
  <div class="tooltip tooltip-bottom" role="tooltip">
    <div class="tooltip-arrow"></div>
    <div class="tooltip-inner">
      Tooltip on the bottom
    </div>
  </div>
  <div class="tooltip tooltip-left" role="tooltip">
    <div class="tooltip-arrow"></div>
    <div class="tooltip-inner">
      Tooltip on the left
    </div>
  </div>
</div>

### Interactive demo

Hover over the buttons below to see their tooltips.

<div class="bd-example tooltip-demo">
  <div class="bd-example-tooltips">
    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</button>
    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</button>
    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</button>
    <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip on left">Tooltip on left</button>
  </div>
</div>

{% highlight html %}
<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">
  Tooltip on top
</button>
<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="right" title="Tooltip on right">
  Tooltip on right
</button>
<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">
  Tooltip on bottom
</button>
<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip on left">
  Tooltip on left
</button>
{% endhighlight %}

## 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 %}
$('#example').tooltip(options)
{% endhighlight %}

### 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).

{% callout warning %}
#### 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. In addition, most assistive technologies currently do not announce the tooltip in this situation.
{% endcallout %}

{% highlight html %}
<!-- HTML to write -->
<a href="#" data-toggle="tooltip" title="Some tooltip text!">Hover over me</a>

<!-- Generated markup by the plugin -->
<div class="tooltip tooltip-top" role="tooltip">
  <div class="tooltip-arrow"></div>
  <div class="tooltip-inner">
    Some tooltip text!
  </div>
</div>
{% endhighlight %}

### Options

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

<div class="table-responsive">
  <table class="table table-bordered table-striped">
    <thead>
      <tr>
        <th style="width: 100px;">Name</th>
        <th style="width: 100px;">Type</th>
        <th style="width: 50px;">Default</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>animation</td>
        <td>boolean</td>
        <td>true</td>
        <td>Apply a CSS fade transition to the tooltip</td>
      </tr>
      <tr>
        <td>container</td>
        <td>string | false</td>
        <td>false</td>
        <td>
          <p>Appends the tooltip to a specific element. Example: <code>container: 'body'</code>. 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.</p>
       </td>
      </tr>
      <tr>
        <td>delay</td>
        <td>number | object</td>
        <td>0</td>
        <td>
         <p>Delay showing and hiding the tooltip (ms) - does not apply to manual trigger type</p>
         <p>If a number is supplied, delay is applied to both hide/show</p>
         <p>Object structure is: <code>delay: { "show": 500, "hide": 100 }</code></p>
        </td>
      </tr>
      <tr>
        <td>html</td>
        <td>boolean</td>
        <td>false</td>
        <td>Insert HTML into the tooltip. If false, jQuery's <code>text</code> method will be used to insert content into the DOM. Use text if you're worried about XSS attacks.</td>
      </tr>
      <tr>
        <td>placement</td>
        <td>string | function</td>
        <td>'top'</td>
        <td>
          <p>How to position the tooltip - top | bottom | left | right.</p>
          <p>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 <code>this</code> context is set to the tooltip instance.</p>
        </td>
      </tr>
      <tr>
        <td>selector</td>
        <td>string</td>
        <td>false</td>
        <td>If a selector is provided, popover objects will be delegated to the specified targets. In practice, this is used to enable dynamic HTML content to have popovers added. See <a href="https://github.com/twbs/bootstrap/issues/4215">this</a> and <a href="http://jsbin.com/zopod/1/edit">an informative example</a>.</td>
      </tr>
      <tr>
        <td>template</td>
        <td>string</td>
        <td><code>'&lt;div class="tooltip" role="tooltip"&gt;&lt;div class="tooltip-arrow"&gt;&lt;/div&gt;&lt;div class="tooltip-inner"&gt;&lt;/div&gt;&lt;/div&gt;'</code></td>
        <td>
          <p>Base HTML to use when creating the tooltip.</p>
          <p>The tooltip's <code>title</code> will be injected into the <code>.tooltip-inner</code>.</p>
          <p><code>.tooltip-arrow</code> will become the tooltip's arrow.</p>
          <p>The outermost wrapper element should have the <code>.tooltip</code> class.</p>
        </td>
      </tr>
      <tr>
        <td>title</td>
        <td>string | element | function</td>
        <td>''</td>
        <td>
          <p>Default title value if <code>title</code> attribute isn't present.</p>
          <p>If a function is given, it will be called with its <code>this</code> reference set to the element that the tooltip is attached to.</p>
        </td>
      </tr>
      <tr>
        <td>trigger</td>
        <td>string</td>
        <td>'hover focus'</td>
        <td>How tooltip is triggered - click | hover | focus | manual. You may pass multiple triggers; separate them with a space. `manual` cannot be combined with any other trigger.</td>
      </tr>
      <tr>
        <td>constraints</td>
        <td>Array</td>
        <td>[]</td>
        <td>An array of constraints - passed through to Tether. For more information refer to Tether's <a href="http://github.hubspot.com/tether/#constraints">constraint docs</a>.</td>
      </tr>
      <tr>
        <td>offset</td>
        <td>string</td>
        <td>'0 0'</td>
        <td>Offset of the popover relative to its target. For more information refer to Tether's <a href="http://github.hubspot.com/tether/#constraints">offset docs</a>.</td>
      </tr>
    </tbody>
  </table>
</div>

{% callout info %}
#### Data attributes for individual tooltips

Options for individual tooltips can alternatively be specified through the use of data attributes, as explained above.
{% endcallout %}

### Methods

#### `$().tooltip(options)`

Attaches a tooltip handler to an element collection.

#### `.tooltip('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 %}$('#element').tooltip('show'){% endhighlight %}

#### `.tooltip('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 %}$('#element').tooltip('hide'){% endhighlight %}

#### `.tooltip('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 %}$('#element').tooltip('toggle'){% endhighlight %}

#### `.tooltip('dispose')`

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

{% highlight js %}$('#element').tooltip('dispose'){% endhighlight %}

### Events

<div class="table-responsive">
  <table class="table table-bordered table-striped">
    <thead>
      <tr>
        <th style="width: 150px;">Event Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>show.bs.tooltip</td>
        <td>This event fires immediately when the <code>show</code> instance method is called.</td>
      </tr>
      <tr>
        <td>shown.bs.tooltip</td>
        <td>This event is fired when the tooltip has been made visible to the user (will wait for CSS transitions to complete).</td>
      </tr>
      <tr>
        <td>hide.bs.tooltip</td>
        <td>This event is fired immediately when the <code>hide</code> instance method has been called.</td>
      </tr>
      <tr>
        <td>hidden.bs.tooltip</td>
        <td>This event is fired when the tooltip has finished being hidden from the user (will wait for CSS transitions to complete).</td>
      </tr>
    </tbody>
  </table>
</div>

{% highlight js %}
$('#myTooltip').on('hidden.bs.tooltip', function () {
  // do something…
})
{% endhighlight %}