Dropdowns (Javascript)

Add dropdown menus to nearly anything with this simple plugin, including the navbar, tabs, and pills.

Within a navbar

Within pills

Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the .open class on the parent list item. When opened, the plugin also adds .dropdown-backdrop as a click area for closing dropdown menus when clicking outside the menu. Note: The data-toggle=dropdown attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it.

Via data attributes

Add data-toggle="dropdown" to a link or button to toggle a dropdown.

<div class="dropdown">
  <a data-toggle="dropdown" href="#">Dropdown trigger</a>
  <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
    ...
  </ul>
</div>

To keep URLs intact, use the data-target attribute instead of href="#".

<div class="dropdown">
  <a id="dLabel" role="button" data-toggle="dropdown" data-target="#" href="/page.html">
    Dropdown <span class="caret"></span>
  </a>

  <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
    ...
  </ul>
</div>

Via JavaScript

Call the dropdowns via JavaScript:

$('.dropdown-toggle').dropdown();

data-toggle="dropdown" still required

Regardless of whether you call your dropdown via JavaScript or instead use the data-api, data-toggle="dropdown" is always required to be present on the dropdown's trigger element.

Options

None

Methods

$().dropdown('toggle')

Toggles the dropdown menu of a given navbar or tabbed navigation.

Events

All dropdown events are fired at the .dropdown-menu's parent element.

Event Type Description
show.bs.dropdown This event fires immediately when the show instance method is called. The toggling anchor element is available as the relatedTarget property of the event.
shown.bs.dropdown This event is fired when the dropdown has been made visible to the user (will wait for CSS transitions, to complete). The toggling anchor element is available as the relatedTarget property of the event.
hide.bs.dropdown This event is fired immediately when the hide instance method has been called. The toggling anchor element is available as the relatedTarget property of the event.
hidden.bs.dropdown This event is fired when the dropdown has finished being hidden from the user (will wait for CSS transitions, to complete). The toggling anchor element is available as the relatedTarget property of the event.
$('#myDropdown').on('show.bs.dropdown', function () {
  // do something...
})

This page was last modified on Friday, 18th July 2014 at 12:01:49 by Gary Keeling. © 2019 GKWeb Design.

Categorised as: Javascript

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