ECMAScript 6

ECMAScript (ES) is a scripting language specification created to standardize JavaScript.

The Sixth Edition, initially known as ECMAScript 6 (ES6) and later renamed to ECMAScript 2015, adds significant new syntax for writing complex applications, including classes and modules, iterators and for/of loops, generators, arrow functions, binary data, typed arrays, collections (maps, sets and weak maps), promises, number and math enhancements, reflection, and proxies.

In other words, ES6 is a superset of JavaScript (ES5). The reason that ES6 became so popular is that it introduced new conventions and OOP concepts such as classes. 
In this module, we cover the most important additions to ES6. 
So, let's jump right in!