Array.prototype.map() is a method that iterates over an array and applies ... We'll also use this as a chance to demonstrate some of the power of functions in JavaScript. We'll write the code four ...

The Map Function is one of the many Methods existing on the JavaScript Array prototype. If you want to do a deep dive on prototypical inheritance, here's a great read by Kyle Simpson on how prototypes ...

Arrays are wonderful and a very particular type in JavaScript. There are many useful built-in properties and methods that will help you resolve any task which involves this kind of type.

Unlike an array, a Set does not allow duplicate values, ensuring that each element occurs only once. SEE: Why JavaScript is the most popular programming language A Map is a versatile data ...