JavaScript Releases Cheatsheet

1995-12	JavaScript announced by Sun & Netscape
1996-03	v1.0 Netscape Navigator 2.0
1996-08	v1.1 Netscape Navigator 3.0; Internet Explorer 3.0 (JScript) equivalent to v1.0
1997-06	v1.2 Netscape Navigator 4.0
1998-10	v1.3 Netscape Navigator 4.06-4.7; ES1/2
	v1.4 Netscape Server
2000-11	v1.5 Netscape Navigator 6.0; Mozilla Firefox 1.0; ES3
2005-11	v1.6 Mozilla Firefox 1.5
2006-10	v1.7 Mozilla Firefox 2.0
2008-06	v1.8 Mozilla Firefox 3.0

ECMAScript versions

1997-06
	1

1998-06
	2 (alignment with ISO/IEC 16262)

1999-12
	3
	regular expressions
	better string handling
	new control statements
	try/catch
	numeric output formatting

2009-12
	5 (4 was abandoned)
	strict mode
	getters and setters
	more complete reflection
	JSON library support

2011-05
	5.1 (alignment with ISO/IEC 16262:2011)

2015-xx
	6 [see https://github.com/lukehoban/es6features]
	arrows `=>`
	classes
	enhanced object litarals
	template strings
	destructuring
	default parameters, rest parameters, spread
	let
	iterators
	generators
	comprehensions
	unicode
	modules
	new collections: Map, Set, WeakMap, WeakSet
	proxies
	symbols
	TCO