Adding an Event Handler

Use an event handler if you choose integration method as **iframe**

<script>
    window.onload = function(e){
      ...
      var objRequestIframe = {
        publicKey: '...',
        ... ,
        onSuccess: handler,
        onExit: handler,
        onError: handler,
        onCancel: handler
      };
      var paynoteIframe =  new PAYNOTE(objRequestIframe);
      paynoteIframe.render();
      ...
    }
  </script>