Use any button to trigger a dropdown menu by placing it within a .btn-group and providing the proper menu markup.
Plugin dependency
Button dropdowns require the dropdown plugin to be included in your version of Bootstrap.
Single button dropdowns
Turn a button into a dropdown toggle with some basic markup changes.
{% highlight html %}
{% endhighlight %}
Split button dropdowns
Similarly, create split button dropdowns with the same markup changes, only with a separate button.
{% highlight html %}
{% endhighlight %}
Sizing
Button dropdowns work with buttons of all sizes.
{% highlight html %}
{% endhighlight %}
Dropup variation
Trigger dropdown menus above elements by adding .dropup to the parent.
{% highlight html %}
{% endhighlight %}