What is cb() in Node?

Question

Where are people getting cb() from, is this a Node thing or vanilla JS thing?

For example:

Managing Node.js Callback Hell with Promises, Generators and Other Ap

Answer 1

From the Vanilla JS, you can declare a function and pass throuw parameters a declaration of another function, that can called async

https://developer.mozilla.org/en-US/docs/Mozilla/js-ctypes/Using_js-ctypes/Declaring_and_Using_Callbacks