title: How to send back data to same form when user hits submit button
body: <p>Ok,</p>
  
  <p>So I have a form that is on page 'index.html'. The user submits the form, which then goes to a processing page, say 'processing.php'. I would like call this processing page from the index page, assign the return value to a variable, and go from there.</p>
  
  <p>The problem I am having is that the page should only be called when the user submits the form on index.html page. So how can I call this processing page before the page actually gets submitted and sent to that page? (I don't know if I am making sense, but I want the user to hit submit, then that action calls on processing page which returns the result back to the index page to display)</p>
  
  <p>Any suggestion on how to approach this?</p>