title: How to add animate css to bootstrap dropdown?
body: <p>I am trying to add to my dropdown one of the classes of <strong><em>animate css with bootstrap 3 dropdown native events</em></strong> but it doesn't work. Could you help me with this problem.</p>
  
  <p>Thank you very much.</p>
  
  <p>Here is the markup</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
   &lt;head&gt;
     &lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
      &lt;link href="css/bootstrap.css" rel="stylesheet"&gt;
      &lt;link href="css/style.css" rel="stylesheet"&gt;
      &lt;link href="css/animate.css" rel="stylesheet"&gt;
  &lt;/head&gt;
  &lt;body&gt;
      &lt;nav class="navbar navbar-default"&gt;
        &lt;div class="container-fluid"&gt;
          &lt;!-- Brand and toggle get grouped for better mobile display --&gt;
          &lt;div class="navbar-header"&gt;
            &lt;button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"&gt;
              &lt;span class="sr-only"&gt;Toggle navigation&lt;/span&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;
              &lt;span class="icon-bar"&gt;&lt;/span&gt;
            &lt;/button&gt;
            &lt;a class="navbar-brand" href="#"&gt;Brand&lt;/a&gt;
          &lt;/div&gt;
  
          &lt;!-- Collect the nav links, forms, and other content for toggling --&gt;
          &lt;div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"&gt;
            &lt;ul class="nav navbar-nav"&gt;
              &lt;li class="active"&gt;&lt;a href="#"&gt;Link &lt;span class="sr-only"&gt;(current)&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Link&lt;/a&gt;&lt;/li&gt;
              &lt;li class="dropdown"&gt;
                &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"&gt;Dropdown &lt;span class="caret"&gt;&lt;/span&gt;&lt;/a&gt;
                &lt;ul class="dropdown-menu" role="menu"&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Another action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Something else here&lt;/a&gt;&lt;/li&gt;
                  &lt;li class="divider"&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Separated link&lt;/a&gt;&lt;/li&gt;
                  &lt;li class="divider"&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;One more separated link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/li&gt;
            &lt;/ul&gt;
            &lt;form class="navbar-form navbar-left" role="search"&gt;
              &lt;div class="form-group"&gt;
                &lt;input type="text" class="form-control" placeholder="Search"&gt;
              &lt;/div&gt;
              &lt;button type="submit" class="btn btn-default"&gt;Submit&lt;/button&gt;
            &lt;/form&gt;
            &lt;ul class="nav navbar-nav navbar-right"&gt;
              &lt;li&gt;&lt;a href="#"&gt;Link&lt;/a&gt;&lt;/li&gt;
              &lt;li class="dropdown"&gt;
                &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"&gt;Dropdown &lt;span class="caret"&gt;&lt;/span&gt;&lt;/a&gt;
                &lt;ul class="dropdown-menu" role="menu"&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Another action&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Something else here&lt;/a&gt;&lt;/li&gt;
                  &lt;li class="divider"&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Separated link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/li&gt;
            &lt;/ul&gt;
          &lt;/div&gt;&lt;!-- /.navbar-collapse --&gt;
        &lt;/div&gt;&lt;!-- /.container-fluid --&gt;
      &lt;/nav&gt;
  
        &lt;script src="js/jquery.min.js"&gt;&lt;/script&gt;
        &lt;script src="js/bootstrap.js"&gt;&lt;/script&gt;
        $('.dropdown').on('show.bs.dropdown', function () {
              $(this).children('.dropdown-menu').addClass('fadeInLeft');
            })
      &lt;/body&gt;
      &lt;/html&gt;
  </code></pre>