Today marks the anticipated release of Drupal 8.0.0. The community has been working hard for the past five years to make Drupal 8 the best open source CMS.

One of the biggest benefits of the AJAX framework introduced in Drupal 7 were callback commands, functions which return a json object of commands to run for any AJAX request. Callback commands, like many things in Drupal, are extensible meaning you can create and invoke your own.