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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Event Bubbling and Delegation

Vic Mercier
Vic Mercier
3,276 Points
Posted by Vic Mercier
Vic Mercier
3,276 Points

Callback

I don't understand what is a call back.Can someone explain me?

1 Answer

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

A "callback" is just a function passed to another function as an argument.

The other function will then call the "callback" function to indicate some event, usually at a later time.

You'll see plenty of examples of these when you work with event handlers, timers, AJAX requests, and other operations where the program must respond to things which will happen in the future.