ng2-bootstrap-base-modified/demo/src/app/components/+dropdown/demos/split/split.html

Native Angular Bootstrap Components Typeahead modified

<div class="btn-group" dropdown>
  <button id="split-button" type="button" class="btn btn-danger">Action</button>
  <button type="button" class="btn btn-danger dropdown-toggle-split" dropdownToggle>
    <span class="caret"></span>
    <span class="sr-only">Split button!</span>
  </button>
  <ul class="dropdown-menu" dropdownMenu role="menu" aria-labelledby="split-button">
    <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>