Basic Dropdown
A dropdown menu is a toggleable menu that allows the user to choose one value from a predefined list:
Example
<div class="dropdown">
<button class="btn btn-primary
dropdown-toggle" type="button" data-toggle="dropdown">Dropdown
Example
<span class="caret"></span></button>
<ul
class="dropdown-menu">
<li><a href="#">HTML</a></li>
<li><a href="#">CSS</a></li>
<li><a href="#">JavaScript</a></li>
</ul>
</div>
Try it Yourself »
Example Explained
The .dropdown class indicates a dropdown menu.
To open the dropdown menu, use a button or a link with a class of .dropdown-toggle and
the data-toggle="dropdown" attribute.
The .caret class creates a caret arrow icon (), which indicates that the
button is a dropdown.
Add the .dropdown-menu class to a <ul> element to actually build the dropdown menu.
Dropdown Divider
The .divider class is used to separate links inside the dropdown
menu with a thin horizontal border:
Dropdown Header
The .dropdown-header class is used to add headers inside the dropdown menu:
Disable an Item
To disable an item in the dropdown menu, use the .disabled class:
Dropdown Position
To right-align the dropdown, add the .dropdown-menu-right class to the element
with .dropdown-menu:
Dropup
If you want the dropdown menu to expand upwards instead of downwards, change
the <div> element with class="dropdown" to "dropup":
Dropdown Accessibility
To help improve accessibility for people using screen readers, you should
include the following role and aria-* attributes, when creating a dropdown menu:
Example
<div class="dropdown">
<button class="btn btn-default
dropdown-toggle" type="button" id="menu1" data-toggle="dropdown">Tutorials
<span class="caret"></span></button>
<ul class="dropdown-menu"
role="menu" aria-labelledby="menu1">
<li
role="presentation"><a role="menuitem" href="#">HTML</a></li>
<li role="presentation"><a role="menuitem" href="#">CSS</a></li>
<li role="presentation"><a role="menuitem" href="#">JavaScript</a></li>
<li role="presentation" class="divider"></li>
<li
role="presentation"><a role="menuitem" href="#">About
Us</a></li>
</ul>
</div>
Try it Yourself »
Test Yourself with Exercises!
Exercise 1 » Exercise 2 » Exercise 3 » Exercise 4 » Exercise 5 »
Complete Bootstrap Dropdown Reference
For a complete reference of all dropdown options, methods and events, go to our Bootstrap JS Dropdown Reference.