title: dropdown button of bootstrap does not work
body: <p>The dropdown code I copied from the first example at <a href="https://getbootstrap.com/docs/5.0/components/dropdowns/" rel="nofollow noreferrer">https://getbootstrap.com/docs/5.0/components/dropdowns/</a>
  But it does work as there. I use Bootstrap v5.0.0-beta2. I paste all of my code in the following:</p>
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=UTF-8&quot;&gt;
          &lt;link rel=&quot;stylesheet&quot; href=&quot;bootstrap/css/bootstrap.min.css&quot;&gt;
      &lt;/head&gt;
  
      &lt;body&gt;
          &lt;script src=&quot;jQuery/jquery-3.6.0.min.js&quot;&gt;&lt;/script&gt;
          &lt;script src=&quot;js/popper.min.js&quot;&gt;&lt;/script&gt;
          &lt;script src=&quot;bootstrap/js/bootstrap.esm.min.js&quot;&gt;&lt;/script&gt;
          &lt;script src=&quot;bootstrap/js/bootstrap.bundle.min.js&quot;&gt;&lt;/script&gt;
          &lt;script src=&quot;bootstrap/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
  
          &lt;div class=&quot;dropdown&quot;&gt;
              &lt;button class=&quot;btn btn-secondary dropdown-toggle&quot; type=&quot;button&quot; id=&quot;dropdownMenuButton1&quot; data-bs-toggle=&quot;dropdown&quot; aria-expanded=&quot;false&quot;&gt;
                  Dropdown button
              &lt;/button&gt;
              &lt;ul class=&quot;dropdown-menu&quot; aria-labelledby=&quot;dropdownMenuButton1&quot;&gt;
                  &lt;li&gt;&lt;a class=&quot;dropdown-item&quot; href=&quot;#&quot;&gt;Action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class=&quot;dropdown-item&quot; href=&quot;#&quot;&gt;Another action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class=&quot;dropdown-item&quot; href=&quot;#&quot;&gt;Something else here&lt;/a&gt;&lt;/li&gt;
              &lt;/ul&gt;
          &lt;/div&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>