anchor.diff:  
   <script>
     $(function() {
  -    var menu = $('#navigation');
  +    var menu = $('#navigation-menu');
       var menuToggle = $('#js-mobile-menu');
   
       $(menuToggle).on('click', function(e) {
  
positive.code:     <div class="logo">Logo</div>
      <p id="js-mobile-menu">MENU</p>
      <div class="nav">
        <ul id="navigation">
          <li><a href="">Item 1</a></li>
          <li><a href="">Item 2</a></li>
          <li><a href="">Item 3</a></li>
          <li><a href="">Item 4</a></li>
          <li><a href="">Item 5</a></li>
        </ul>
      </div>
      <ul class="nav-button">
  
negative.code:       });
      });
    });
  </script>
  