demo/src/app/components/+dropdown/demos/split/split.html
<div class="btn-group" dropdown>
<button type="button" class="btn btn-danger">Action</button>
<button id="button-split" type="button" dropdownToggle class="btn btn-danger dropdown-toggle dropdown-toggle-split"
aria-controls="dropdown-split">
<span class="caret"></span>
<span class="sr-only">Split button!</span>
</button>
<ul id="dropdown-split" *dropdownMenu class="dropdown-menu"
role="menu" aria-labelledby="button-split">
<li role="menuitem"><a class="dropdown-item" href="#">Action</a></li>
<li role="menuitem"><a class="dropdown-item" href="#">Another action</a>
</li>
<li role="menuitem"><a class="dropdown-item" href="#">Something else
here</a></li>
<li class="divider dropdown-divider"></li>
<li role="menuitem"><a class="dropdown-item" href="#">Separated link</a>
</li>
</ul>
</div>