frontend/public/facebook-auth.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <title>JwtAuthDemo - Facebook Auth</title>  
    <meta name="viewport" content="width=device-width, initial-scale=1">    
    <script src="util.js"></script>
  </head> 
  <body>
  <script>
      // if we don't receive an access token then login failed and/or the user has not connected properly
      var accessToken = getParameterByName("access_token");
      var message = {};
      if (accessToken) {
        message.status = true;
        message.accessToken = accessToken;
      }
      else
      {
        message.status = false;
        message.error = getParameterByName("error");
        message.errorDescription = getParameterByName("error_description");
      }
      window.opener.postMessage(JSON.stringify(message), "http://localhost:8088");
  </script>
  </body>
</html>