Tip on serializing event in fullCalendar with JSON.stringify

When serializing a fullCalendar event with JSON.stringify() you may receive an error message like this one:

TypeError:Converting circular structure to JSON

That happens because each event has a reference to its source, which has a reference to the event itself, effectively creating a circular reference that JSON.stringify cannot manage.

The culprit is the event’s “source” property.   The way I deal with this is removing the source property before sending the event to its destination (ajax call, database CRUD function, etc):

delete event.source;
saveEvent(event);

 

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