Constraint Validation API

API for better control over form field validation. Includes support for checkValidity(), setCustomValidity(), reportValidity() and validation states.

Spec	https://html.spec.whatwg.org/dev/form-control-infrastructure.html#the-constraint-validation-api
Status	WHATWG Living Standard

IE	Edge	Firefox	Chrome	Safari	Opera
			108
		107	107	TP
		106	106	16.1
11 (1,2,3)	105	105	105	16.0	91
10 (1,2,3)	104	104	104	15.6	90
9	103	103	103	15.5	89
8	102	102	102	15.4	88
Show all
7	101	101	101	15.2-15.3	87
6	100	100	100	15.1	86
5.5	99	99	99	15	85
	98	98	98	14.1	84
	97	97	97	14	83
	96	96	96	13.1	82
	95	95	95	13	81
	94	94	94	12.1	80
	93	93	93	12	79
	92	92	92	11.1	78
	91	91	91	11	77
	90	90	90	10.1	76
	89	89	89	10	75
	88	88	88	9.1 (1,2)	74
	87	87	87	9 (1,2)	73
	86	86	86	8 (1,2)	72
	85	85	85	7.1 (1,2)	71
	84	84	84	7 (1,2,3)	70
	83	83	83	6.1 (1,2,3)	69
	81	82	81	6 (1,2,3)	68
	80	81	80	5.1 (1,2,3)	67
	79	80	79	5	66
	18	79	78	4	65
	17	78	77	3.2	64
	16 (1,2)	77	76	3.1	63
	15 (1,2)	76	75		62
	14 (1,2)	75	74		60
	13 (1,2,3)	74	73		58
	12 (1,2,3)	73	72		57
		72	71		56
		71	70		55
		70	69		54
		69	68		53
		68	67		52
		67	66		51
		66	65		50
		65	64		49
		64	63		48
		63	62		47
		62	61		46
		61	60		45
		60	59		44
		59	58		43
		58	57		42
		57	56		41
		56	55		40
		55	54		39
		54	53		38
		53	52		37
		52	51		36
		51	50		35
		50 (2)	49		34
		49 (2)	48		33
		48 (1,2)	47		32
		47 (1,2)	46		31
		46 (1,2)	45		30
		45 (1,2)	44		29
		44 (1,2)	43		28
		43 (1,2)	42		27
		42 (1,2)	41		26 (1,2)
		41 (1,2)	40		25 (1,2)
		40 (1,2)	39 (1,2)		24 (1,2)
		39 (1,2)	38 (1,2)		23 (1,2)
		38 (1,2)	37 (1,2)		22 (1,2)
		37 (1,2)	36 (1,2)		21 (1,2)
		36 (1,2)	35 (1,2)		20 (1,2)
		35 (1,2)	34 (1,2)		19 (1,2)
		34 (1,2)	33 (1,2)		18 (1,2)
		33 (1,2)	32 (1,2)		17 (1,2)
		32 (1,2)	31 (1,2)		16 (1,2)
		31 (1,2)	30 (1,2)		15 (1,2)
		30 (1,2)	29 (1,2)		12.1 (1,2,3)
		29 (1,2)	28 (1,2)		12 (1,2,3)
		28 (1,2,3)	27 (1,2)		11.6 (1,2,3)
		27 (1,2,3)	26 (1,2)		11.5
		26 (1,2,3)	25 (1,2)		11.1
		25 (1,2,3)	24 (1,2,3)		11
		24 (1,2,3)	23 (1,2,3)		10.6
		23 (1,2,3)	22 (1,2,3)		10.5
		22 (1,2,3)	21 (1,2,3)		10.0-10.1
		21 (1,2,3)	20 (1,2,3)		9.5-9.6
		20 (1,2,3)	19 (1,2,3)		9
		19 (1,2,3)	18 (1,2,3)
		18 (1,2,3)	17 (1,2,3)
		17 (1,2,3)	16 (1,2,3)
		16 (1,2,3)	15 (1,2,3)
		15 (1,2,3)	14
		14 (1,2,3)	13
		13 (1,2,3)	12
		12 (1,2,3)	11
		11 (1,2,3)	10
		10 (1,2,3)	9
		9 (1,2,3)	8
		8 (1,2,3)	7
		7 (1,2,3)	6
		6 (1,2,3)	5
		5 (1,2,3)	4
		4 (1,2,3)
		3.6
		3.5
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
16.1
16.0	all	105	10 (1,2)	64	105	104	11 (1,2,3)	13.4	18.0	13.1	13.18	2.5 (1,2)
15.6		4.4.3-4.4.4 (1,2)	7	12.1 (1,2,3)			10 (1,2,3)		17.0
15.5		4.4 (1,2)		12 (1,2,3)					16.0
15.4		4.2-4.3 (1,2,3)		11.5					15.0
Show all
15.2-15.3		4.1 (1,2,3)		11.1					14.0
15.0-15.1		4 (1,2,3)		11					13.0
14.5-14.8		3		10					12.0
14.0-14.4		2.3							11.1-11.2
13.4-13.7		2.2							10.1
13.3		2.1							9.2
13.2									8.2
13.0-13.1									7.2-7.4
12.2-12.5									6.2-6.4
12.0-12.1									5.0-5.4
11.3-11.4									4
11.0-11.2
10.3
10.0-10.2
9.3 (1,2)
9.0-9.2 (1,2)
8.1-8.4 (1,2)
8 (1,2)
7.0-7.1 (1,2)
6.0-6.1 (1,2,3)
5.0-5.1 (1,2,3)
4.2-4.3
4.0-4.1
3.2

Notes

1. Does not support reportValidity

2. Does not support validity.tooShort. See also support for minlength.

3. Does not support validity.badInput

Resources

• MDN article on constraint validation
• `reportValidity()` ponyfill