ECMAScript History

Created by Brendan Eich

https://static.businessinsider.com

ES1 1997

ES2 1998

ES3 1999

• regex
• try/catch
• etc

ES4 199...Never

• classes
• destructuring
• modules
• generators
• iterators
• optional static typing
• etc

ES3.1 ES5 2009

• getters/setters
• JSON.parse
• meh

ES6 2015

• arrows
• classes
• enhanced object literals
• template strings
• destructuring
• default + rest + spread
• let + const
• iterators + for..of
• generators
• unicode
• modules
• module loaders
• map + set + weakmap + weakset

https://github.com/lukehoban/es6features

• proxies
• symbols
• subclassable built-ins
• promises
• math + number + string + array + object APIs
• binary and octal literals
• reflect api
• tail calls

ES2016 (ES7) 

• Array.prototype.includes
• Exponentiation Operator

http://2ality.com/2016/01/ecmascript-2016.html​

ES2017 (ES8)

• Async/Await
• Shared Memory Arrays
• Object.values
• Object.entries
• Object.getOwnPropertyDescriptors
• Trailing comma in function params

http://2ality.com/2016/02/ecmascript-2017.html​