title: google drive sdk - What are the JavaScript Origins and Authorized Redirect URLs?
body: <p>While creating the Client_ID I am stuck in these two textboxes (JavaScript Origins and Authorized Redirect URLs) appearing on that PopUp. I am not able to search the internet about those two things.</p>
  
  <p>In a tutorial it was written that we just need to put our hostnames there! But why? What do they actually mean?</p>
  
  <p>Hope I am clear.</p>
  
  <p><strong>Any help would be appreciated.</strong></p>