Please explain callback function.

Question

All i know is you pass a function as an argument to another function.

Answer 1

It is a function, that is called by an event eg mouseclick.
So you dont call the function yourself but tell the eventhandler to call it.
(what is the passing to another func)

Answer 2

Oma Falk I saw it in a example. So got confused.
Thank you for explaining.