Here’s an example: let myVar = true; JavaScript “coerces” variables to Boolean when testing to true/false. Additionally, a variety of “falsy” and “truthy” variables exist in this vein.

Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison ...

CoffeeScript makes a lot of changes to JavaScript's syntax, and uses JavaScript's ... to rename methods and variables and fix all the places that those methods and variables are used.