Hi Don Hizzo,
Thank you for reaching out.
You can prevent the default popup from opening when clicking on an event and instead call your JavaScript function by using the Scheduler's EventClick event.
@using Syncfusion.EJ2.Schedule @(Html.EJS().Schedule("schedule") .EventClick("OnEventClick") .SelectedDate(new DateTime(2018, 2, 15)) function OnEventClick(args) { args.cancel = true; // prevent the default popup opening //You can trigger your javascript function here alert("You can trigger your javascript function here") |