IntersectionObserver

API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport. The position is delivered asynchronously and is useful for understanding the visibility of elements and implementing pre-loading and deferred loading of DOM content.

Spec	https://www.w3.org/TR/intersection-observer/
Status	W3C Working Draft

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

Notes

Enabled in Firefox by setting the about:config preference dom.IntersectionObserver.enabled to true
"Preliminary" support as feature is still in development
isIntersecting property of IntersectionObserverEntry was not implemented, returning undefined
IntersectionObserver does not trigger its callback in a Chrome background tab

Bugs

Chromium: In a background tab, IntersectionObserver does not trigger its callback.

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
https://caniuse.com/intersectionobserver