title: adding actions to menus in bootstrapping
body: <p>I am working on a bootstrapping.</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang="en"&gt;
  &lt;head&gt;
    &lt;title&gt;Bootstrap Case&lt;/title&gt;
    &lt;meta charset="utf-8"&gt;
    &lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
    &lt;link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css"&gt;
    &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"&gt;&lt;/script&gt;
    &lt;script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
  &lt;nav class="navbar navbar-inverse"&gt;
    &lt;div class="container-fluid"&gt;
      &lt;div class="navbar-header"&gt;
        &lt;button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar"&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;TEST&lt;/a&gt;
      &lt;/div&gt;
      &lt;div class="collapse navbar-collapse" id="myNavbar"&gt;
        &lt;ul class="nav navbar-nav"&gt;
          &lt;li&gt;&lt;a href="#"&gt;Performance&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#"&gt;Book Library&lt;/a&gt;&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/nav&gt;
  
  &lt;div class="container"&gt;
    &lt;h3&gt;Collapsible Navbar&lt;/h3&gt;
    &lt;p&gt;In this example, the navigation bar is hidden on small screens and replaced by a button in the top right corner (try to re-size this window).
    &lt;p&gt;Only when the button is clicked, the navigation bar will be displayed.&lt;/p&gt;
  &lt;/div&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>But here, </p>
  
  <p>I want content to be filled by "this is performance" when performance is clicked and "this is book library" when library is clicked.</p>
  
  <p>How can I add actions when clicking menus?</p>