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

Native Angular Bootstrap Components Typeahead modified

<div class="btn-group" dropdown keyboardNav="true">
  <button id="simple-btn-keyboard-nav" type="button" class="btn btn-primary" dropdownToggle>
    Dropdown with keyboard navigation <span class="caret"></span>
  </button>
  <ul class="dropdown-menu" dropdownMenu role="menu" aria-labelledby="simple-btn-keyboard-nav">
    <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>