title: Can i append an already existing div to another already existing div?
body: <p>I have a contact form in a div on it's own with opacity 0, and a div where content is dynamically manipulated depending on what the user click on the menu.
  After the user gets to the last stage of the menu i need to clear the content of the div that displays everything and then "move" the form div into it,
  would something like this work? </p>
  
  <pre><code>$('#menu_form').on('click', function() {
      $('#form_div').append('#display_div');
  });
  </code></pre>
  
  <p>So to recap 2 already existing divs, need to place one of them into the other on click.</p>