title: Access client side variable on the server side
body: <p>I'm developing an app which has a lot of client side javascript handling for navigation around a responsive app (which ultimately consists of one gigantic form).</p>
  
  <p>Basically, as the user progresses through the form (i.e. presses a button which is handled client side in javascript) I need to store the timestamp in which the user presses the button.</p>
  
  <p>I'm storing the timestamp in JavaScript variables when the button event is triggered.</p>
  
  <p>Now, when the user presses the submit button on the form and it sends the POST request to the server, I need to send the values of these variables.</p>
  
  <p>Any ideas how I can do this?</p>