The onCallBackEnd event handler fires after the Scheduler receives a response from a server-side AJAX callback.
DayPilot.Scheduler.onCallBackEnd(args)args (object) - empty object
This legacy callback event is available in ASP.NET WebForms, ASP.NET MVC, and Java integrations.
Use it to remove progress indicators or show a completion message after the callback finishes. No additional event data is supplied.