How to explain callbacks in plain english? How are they different from calling one function from another function?

Question

How to explain callbacks in plain English? How are they different from calling one function from another function taking some context from the calling function? How can thei

Answer 1

Usually we sent variables to functions . Suppose you have task where the variable needs to be processed before being given as an argument - you can use callback .

function1(var1, var2) is the usual way .

What if I want var2 to be processed and then sent as an argument? function1(var1, function2(var2))

This is one type of callback - where function2 executes some code and returns a variable back to the initial function .