XMLHttpRequest advanced features

Adds more functionality to XHR (aka AJAX) requests like file uploads, transfer progress information and the ability to send form data. Previously known as XMLHttpRequest Level 2, these features now appear simply in the XMLHttpRequest spec.

Spec	https://xhr.spec.whatwg.org/
Status	WHATWG Living Standard

IE	Edge	Firefox	Chrome	Safari	Opera
			103
		100	102
		99	101	TP
11 (1)	99	98	100	15.4	83
10 (1)	98	97	99	15.2-15.3	82
9	97	96	98	15.1	81
8	96	95	97	15	80
Show all
7	95	94	96	14.1	79
6	94	93	95	14	78
5.5	93	92	94	13.1	77
	92	91	93	13	76
	91	90	92	12.1	75
	90	89	91	12	74
	89	88	90	11.1	73
	88	87	89	11	72
	87	86	88	10.1	71
	86	85	87	10	70
	85	84	86	9.1	69
	84	83	85	9	68
	83	82	84	8	67
	81	81	83	7.1	66
	80	80	81	7 (1)	65
	79	79	80	6.1 (1)	64
	18	78	79	6 (1,2)	63
	17	77	78	5.1 (1,2)	62
	16	76	77	5 (1,2)	60
	15	75	76	4	58
	14	74	75	3.2	57
	13	73	74	3.1	56
	12	72	73		55
		71	72		54
		70	71		53
		69	70		52
		68	69		51
		67	68		50
		66	67		49
		65	66		48
		64	65		47
		63	64		46
		62	63		45
		61	62		44
		60	61		43
		59	60		42
		58	59		41
		57	58		40
		56	57		39
		55	56		38
		54	55		37
		53	54		36
		52	53		35
		51	52		34
		50	51		33
		49	50		32
		48	49		31
		47	48		30
		46	47		29
		45	46		28
		44	45		27
		43	44		26
		42	43		25
		41	42		24
		40	41		23
		39	40		22
		38	39		21
		37	38		20
		36	37		19
		35	36		18
		34	35		17 (1)
		33	34		16 (1)
		32	33		15 (1)
		31	32		12.1
		30	31		12
		29	30 (1)		11.6
		28	29 (1)		11.5
		27	28 (1,2)		11.1
		26	27 (1,2)		11
		25	26 (1,2)		10.6
		24	25 (1,2)		10.5
		23	24 (1,2)		10.0-10.1
		22	23 (1,2)		9.5-9.6
		21	22 (1,2)		9
		20	21 (1,2)
		19	20 (1,2)
		18	19 (1,2)
		17	18 (1,2)
		16	17 (1,2)
		15	16 (1,2)
		14	15 (1,2)
		13	14 (1,2)
		12	13 (1,2)
		11 (2)	12 (1,2)
		10 (2)	11 (1,2)
		9 (1,2)	10 (1,2)
		8 (1,2)	9 (1,2)
		7 (1,2)	8 (1,2)
		6 (1,2)	7 (1,2)
		5 (1,2,3)	6
		4 (1,2,3)	5
		3.6 (1,2,3)	4
		3.5 (1,2,3)
		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
15.4	all	99	10 (1)	64	100	98	11 (1)	12.12	16.0	10.4	7.12	2.5
15.2-15.3		4.4.3-4.4.4	7 (1,2)	12.1			10 (1)		15.0
15.0-15.1		4.4 (1,2)		12					14.0
14.5-14.8		4.2-4.3 (1,2,3)		11.5					13.0
Show all
14.0-14.4		4.1 (1,2,3)		11.1					12.0
13.4-13.7		4 (1,2,3)		11					11.1-11.2
13.3		3 (1,2,3)		10					10.1
13.2		2.3							9.2
13.0-13.1		2.2							8.2
12.2-12.5		2.1							7.2-7.4
12.0-12.1									6.2-6.4
11.3-11.4									5.0-5.4
11.0-11.2									4
10.3
10.0-10.2
9.3
9.0-9.2
8.1-8.4
8
7.0-7.1 (1)
6.0-6.1 (1,2)
5.0-5.1 (1,2)
4.2-4.3
4.0-4.1
3.2

Notes

1. Partial support refers to not supporting json as responseType

2. Partial support refers to not supporting .timeout and .ontimeout

3. Partial support refers to not supporting blob as responseType

Bugs

• Firefox 3.5 and 3.6 partial support refers to only including support for the progress event.

• WebKit versions 535 and older (r103502) do not implement the onloadend event

• IE10 and 11 do not support synchronous requests, with support being phased out in other browsers too. This is due to detrimental effects resulting from making them.

• The "progress" event is reported to not work in Chrome for iOS

• In Internet Explorer the timeout property may only be set after calling open and before calling send.

Resources

• MDN Web Docs - FormData
• Polyfill for FormData object
• WebPlatform Docs