Pass a function into another function.

Callback Arguments

callback_argument.js
const step = 2;
const values = [5, 6];
const adjusted = values.map((value) => value + step);

console.log("step=" + step);
console.log("adjusted=" + adjusted.join(","));
callback-argument A callback is a function passed as an argument. Array methods call the callback for each element they need to process.