Hi,
A small heads-up:
FullCalendar.io released a new version (5) of their calendar component. Unfortunately, the API is incompatible with version 4. (alas, happens often in the Javascript world)
As a result:
The Fullcalendar unit has been renamed to fullcalendar4, and a new fullcalendar5 unit has been added which contains the definitions for V5.
I added a new example for V5, which demonstrates also adding an event popup using libbootstrap (which was also updated, by the way).
As a reminder, the demos are online at:
https://www.freepascal.org/~michael/pas2js-demos/fullcalendar/
Michael.
