Discussion on: JavaScript Callbacks Explained in 5 Minutes

View post

Callback functions are functions that are passed as a parameter to another function

It's not as simple as this. To be considered a callback, it really needs to be called by the code it is passed to.

This is a great clarification. I can't think of a reasonable scenario where you would pass a function without the expectation that it's going to be called. Because of that, I think it would be implied, but this is a great callout.

Jon Randy 🎖️ • Aug 11 '22 • Edited

A few random possibilities off the top of my head:

A function to wrap another function and return the wrapped version (debounce springs to mind)
A function to compose one or more functions, and return the new one.
A function to return the arity of the passed function
A function to display the source of the passed function