# Event::setProp

Modifies any of the non-date-related properties of an [Event Object](event-object.md).

<div class='spec'>

event.setProp( *name*, *value* )

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This will cause the event to rerender. If there are other [events](event-object.md) that share the same `groupId`, those events' props will be similarly modified.

To modify any of the `extendedProps`, use [setExtendedProp](Event-setExtendedProp.md).

To modify date-related properties like `start`, `end`, and `allDay`, use the following methods:

- [setStart](Event-setStart.md)
- [setEnd](Event-setEnd.md)
- [setDates](Event-setDates.md)
- [setAllDay](Event-setAllDay.md)
- [moveStart](Event-moveStart.md)
- [moveEnd](Event-moveEnd.md)
- [moveDates](Event-moveDates.md)