Coverage / cssom-view

CSSOM View Module

Specification: drafts.csswg.org/cssom-view-1/. 5 interfaces defined here, 101 members exposed on Window (Web IDL). Group: Test DOM core.

Existence only: “present” means the name is defined where Web IDL puts it, not that it behaves as the standard says. The featured checks test behavior.

Share present per engine
Engine	Members present	Interfaces present
warpdom0.1.6maintainer's engine	50% (50 of 101)	1 of 5
happy-dom21.0.3	41% (41 of 101)	2 of 5
jsdom30.1.3	48% (48 of 101)	1 of 5
linkedom0.18.13	<1% (1 of 101)	0 of 5

CaretPosition3 membersMissingMissingMissingMissing

CSSPseudoElement4 members added to CSSPseudoElement (defined in CSS Pseudo-Elements Module Level 4)0/40/40/40/4

Document8 members added to Document (defined in DOM)0/82/80/80/8

Element20 members added to Element (defined in DOM)10/2011/2010/201/20

HTMLElement6 members added to HTMLElement (defined in HTML)5/64/65/60/6

HTMLImageElement2 members added to HTMLImageElement (defined in HTML)0/22/20/20/2

MediaQueryList5 membersMissingMissingMissingMissing

MediaQueryListEvent2 membersMissingPresentMissingMissing

MouseEvent6 members added to MouseEvent (defined in Pointer Events)6/60/66/60/6

Range2 members added to Range (defined in DOM)2/22/20/20/2

Screen6 membersPresentPresentPresentMissing

Text4 members added to Text (defined in DOM)0/40/40/40/4

VisualViewport10 membersMissingMissingMissingMissing

Window23 members added to Window (defined in HTML)21/2320/2321/230/23

Probed 2026-10-19. Data: idl.json (CC BY 4.0).