title: A nonce for each function or one for all AJAX calls?
body: <p>I'm using nonces as WordPress uses them. It's an extra security measure, a hash that is being sent to the server that changes within ever few hours.</p>
  
  <p>If that hash is not there, the request is invalidated.</p>
  
  <p>The page I am working on has <em>many</em> AJAX calls (about 20 or so). Right now, I have a difference unique nonce for each one. Is that necessary? Should I just keep it with one generic "AJAX" nonce used for all the requests?</p>