navigation.ejs

<nav class="navbar navbar-inverse navbar-fixed-top">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="/"><i class='fa fa-bug'></i> Damn Vulnerable NodeJS Application</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class='nav navbar-nav navbar-right'>
          <% if(messages.authenticated){ %>
          <li>
              <a href='/logout'>
                  <i class='fa fa-sign-out'></i> Logout
              </a>
          </li>
          <% } %>
      </ul>
    </div>
  </div>
</nav>