title: Bootstrap Dropdowns button not working with Angular 8 component
body: <p>I am trying to show dropdown menu using bootstrap4.3 class but after selecting on menu nothing will happen I ma using angular 8 version.</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;div class="dropdown"&gt;
    &lt;button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"&gt; Dropdown button &lt;/button&gt;
    &lt;div class="dropdown-menu" aria-labelledby="dropdownMenuButton"&gt;
      &lt;a class="dropdown-item" href="#"&gt;Action&lt;/a&gt;
      &lt;a class="dropdown-item" href="#"&gt;Another action&lt;/a&gt;
      &lt;a class="dropdown-item" href="#"&gt;Something else here&lt;/a&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>