First, the benefits of adopting a functional style are clear.

Second, don't be scared of functional programming. Yes, it is often thought of as pure logic in the form of computer language, but we don't need to understand Lambda calculus to be able to apply it to everyday tasks. The fact is, by allowing our programs to be broken down into smaller pieces, they're easier to understand, simpler to maintain, and more reliable. map() and reduce() function's are lesser-known built-in functions in JavaScript, but we'll look at them.

JavaScript is a scripting language, interactive and approachable. No compiling is necessary. We don't even need to download any development software, your favorite browser works as the interpreter and as the development environment.

Interested? Alright, let's get started!