ECMAScript 6th Edition (ES6 / ECMAScript 2015)

In a nutshell

ECMAScript 6 (ES6), later renamed to ECMAScript 2015, added lots of features to the ECMAScript language:

• Class declarations (e.g., class Person { ... }
• ES6 modules (e.g., import * as myModule from '...) or export const Foo
• for...of loops
• Generators
• Arrow functions
• let and const
• New collections: Map, Set, WeakMap
• Promises
• Template literals

See this website for an exhaustive list.

Sources / related

• ECMAScript version history
• caniuse.com – es6
• EcmaScript 2015 – Wikipedia