Dropdowns – Bootstrap


Dropdowns

Bootstrap provides Dropdowns as a plugin for displaying lists of links.
A dropdown is a button which toggles displaying a list of links.

Bootstrap’s dropdowns are designed to be generic and applicable to a variety of situations. For instance, it is possible to create dropdowns that contain search fields or login forms.

Example

<div class="dropdown"> <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Dropdown example </button> <div class="dropdown-menu" aria-labelledby="dropdownMenuButton"> <a class="dropdown-item" href="#">Action</a> <a class="dropdown-item" href="#">Another action</a> <a class="dropdown-item" href="#">Something else here</a> </div> </div>

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 unordered list element to actually build the dropdown menu.

More Information:

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