Bootstrap Dropdowns






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Bootstrap Dropdowns



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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:



Example



<li class="divider"></li>

Try it Yourself »





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Dropdown Header







The .dropdown-header class is used to add headers inside the dropdown menu:



Example



<li class="dropdown-header">Dropdown header 1</li>

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Disable and Active items







Highlight a specific dropdown item with the .active class (adds a blue background color).


To disable an item in the dropdown menu, use the .disabled class (gets a light-grey text color and a "no-parking-sign" icon on hover):



Example



<li class="disabled"><a href="#">CSS</a></li>
<li class="active"><a href="#">HTML</a></li>

Try it Yourself »


Dropdown Position







To right-align the dropdown, add the .dropdown-menu-right class to the element
with .dropdown-menu:



Example



<ul class="dropdown-menu dropdown-menu-right">

Try it Yourself »


Dropup








If you want the dropdown menu to expand upwards instead of downwards, change
the <div> element with class="dropdown" to "dropup":



Example



<div class="dropup">

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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.




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