The onCallBackStart event handler fires when the Scheduler starts a server-side AJAX callback.
Declaration
DayPilot.Scheduler.onCallBackStart(args)Parameters
args(object) - empty object
Notes
This legacy callback event is available in ASP.NET WebForms, ASP.NET MVC, and Java integrations.
Use it to show progress before the callback response arrives. No additional event data is supplied.
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