A Bootstrap dropdown is a Bootstrap component that allows an HTML element trigger the display of a sub-menu dropdown upon the element being clicked.
Here is a basic HTML usage example:
<div class="dropdown">
<button id="dLabel" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown trigger
<span class="caret"></span>
</button>
<ul class="dropdown-menu" aria-labelledby="dLabel">
...
</ul>
</div>
Dropdown sub-menu items can be specified by inserting li
elemented within the ul
element with the .dropdown-menu
class.