JavaScript Versions Cheatsheet




VersionYearVersion Name (s)Features added
11997ECMAScript 1
21998ECMAScript 2
31999ECMAScript 3Regular Expressions, try-catch blocks
4Not ReleasedECMAScript 4
52009ECMAScript 5strict mode, JSON support
5.12011ECMAScript 5.1
62015ECMAScript 2015 (ES 6)let and const, Modules, Promises, Classes & Inheritance, Template Literals, Object destructing, Generators, Map and Set, default parameter values
72016ECMAScript 2016Array.includes(), **
82017ECMAScript 2017Async Functions, Object.entries
92018ECMAScript 2018Spread operator,


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