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ECMAScript 5

Full support for the ECMAScript 5 specification. Features include Function.prototype.bind, Array methods like indexOf, forEach, map & filter, Object methods like defineProperty, create & keys, the trim method on Strings and many more.

Spec	http://www.ecma-international.org/ecma-262/5.1/
Status	Other

IE	Edge	Firefox	Chrome	Safari	Opera
		57	62
		56	61	TP	48
	16	55	60	11	47
11	15	54	59	10.1	46
10	14	53	58	10	45
9 ⁽²⁾	13	52	57	9.1	44
8 ⁽⁴⁾	12	51	56	9	43
Show all
7		50	55	8	42
6		49	54	7.1	41
5.5		48	53	7	40
		47	52	6.1	39
		46	51	6	38
		45	50	5.1	37
		44	49	5	36
		43	48	4	35
		42	47	3.2	34
		41	46	3.1	33
		40	45		32
		39	44		31
		38	43		30
		37	42		29
		36	41		28
		35	40		27
		34	39		26
		33	38		25
		32	37		24
		31	36		23
		30	35		22
		29	34		21
		28	33		20
		27	32		19
		26	31		18
		25	30		17
		24	29		16
		23	28		15
		22	27		12.1 ⁽¹⁾
		21	26		12
		20 ⁽¹⁾	25		11.6
		19 ⁽¹⁾	24		11.5
		18 ⁽¹⁾	23		11.1
		17 ⁽¹⁾	22 ⁽¹⁾		11
		16 ⁽¹⁾	21 ⁽¹⁾		10.6
		15 ⁽¹⁾	20 ⁽¹⁾		10.5
		14 ⁽¹⁾	19 ⁽¹⁾		10.0-10.1
		13 ⁽¹⁾	18		9.5-9.6
		12 ⁽¹⁾	17		9
		11 ⁽¹⁾	16
		10 ⁽¹⁾	15
		9 ⁽¹⁾	14
		8 ⁽¹⁾	13
		7 ⁽¹⁾	12
		6 ⁽¹⁾	11
		5 ⁽¹⁾	10
		4 ⁽¹⁾	9
		3.6	8
		3.5	7
		3	6
		2	5
			4

iOS Safari	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser
11
10.3	all ⁽¹⁾	56	10	37	59	54	11	11.4	5	1.2	7.12
10.0-10.2		4.4.3-4.4.4	7	12.1 ⁽¹⁾			10		4
9.3		4.4		12
9.0-9.2		4.2-4.3 ⁽¹⁾		11.5
Show all
8.1-8.4		4.1 ⁽¹⁾		11.1
8		4 ^(1,2,3)		11
7.0-7.1		3		10
6.0-6.1		2.3
5.0-5.1		2.2
4.2-4.3		2.1
4.0-4.1
3.2

Notes

As the specification includes many JavaScript features, un-numbered partial support varies widely and is shown in detail on the ECMAScript 5 compatibilty tables by Kangax.

Does not support parseInt() ignoring leading zeros.
Does not support Strict mode
Does not support zero-width chars in identifiers & Immutable undefined
IE8 has virtually no ES5 support, but does support Object.defineProperty, Object.getOwnPropertyDescriptor, JSON parsing & Property access on strings

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=es5