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High Resolution Time API

Method to provide the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments. Called using performance.now()

Spec	http://www.w3.org/TR/hr-time/
Status	W3C Recommendation

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	13	52	57	9.1	44
8	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
		21	26		12
		20	25		11.6
		19	24		11.5
		18	23 ^(*)		11.1
		17	22 ^(*)		11
		16	21 ^(*)		10.6
		15	20 ^(*)		10.5
		14	19		10.0-10.1
		13	18		9.5-9.6
		12	17		9
		11	16
		10	15
		9	14
		8	13
		7	12
		6	11
		5	10
		4	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	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			10		4
9.3		4.4		12
9.0-9.2		4.2-4.3		11.5
Show all
8.1-8.4		4.1		11.1
8		4		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

^* Partial support with prefix.

Bugs

Older versions of Chrome and Opera on Windows have only millisecond precision. The fractional part is always near the very start or the very end of a millisecond. (issue #158234).
The Spy in the Sandbox vulnerability is a class of JavaScript-based exploits that leverage the High Resolution Time API to detect CPU cache hit/miss on chosen plaintext data placed into cache by an attacker. Full security research paper is here

Resources

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