API Catalog

Visualize and analyze the API overlap between standards specifications and type systems within browsers.

Browser information was gathered by traversing the type system within the latest available version of the top browsers. Specification data was gathered by extracting Web IDL definitions from notable web specifications. Note that an API that is shown as detected does not necessarily mean it functions per specification; where the absence of an API under an interface could be due to the browser supporting an API in a different part of the prototype chain. This data is made publicly available to help each browser vendor work toward the goal of a more interoperable web platform. For more information, visit our FAQ page.

APIs by interface

API NameSpecificationsMicrosoft EdgeGoogle ChromeMozilla FirefoxApple Safari
CSSPseudoElement
@@toStringTag    
arguments    
caller    
convertPointFromNode    
convertQuadFromNode    
convertRectFromNode    
getBoxQuads    
name   
CSSStyleDeclaration
@@iterator 
@@toStringTag   
arguments   
caller   
name
scrollBehavior  
scroll-behavior   
CaretPosition
@@toStringTag    
arguments    
caller    
getClientRect   
name   
offset   
offsetNode   
Document
@@toStringTag   
@@unscopables
arguments   
caller   
constructor
convertPointFromNode   
convertQuadFromNode   
convertRectFromNode   
getBoxQuads   
length
name
prototype
scrollingElement
Element
@@toStringTag   
@@unscopables
arguments   
caller   
clientHeight
clientLeft
clientTop
clientWidth
convertPointFromNode   
convertQuadFromNode   
convertRectFromNode   
getBoundingClientRect
getBoxQuads   
getClientRects
name
scroll 
scrollBy 
scrollHeight
scrollIntoView
scrollLeft
scrollTo 
scrollTop
scrollWidth
HTMLElement
@@toStringTag   
arguments   
caller   
constructor
length
name
offsetHeight
offsetLeft
offsetParent
offsetTop
offsetWidth
prototype
HTMLImageElement
@@toStringTag   
arguments   
caller   
constructor
length
prototype
x
y
MediaQueryList
@@toStringTag   
addListener 
arguments   
caller   
matches 
media 
name 
onchange  
removeListener 
MediaQueryListEvent
@@toStringTag   
arguments   
caller   
constructor  
length  
matches  
media  
name  
prototype  
MouseEvent
@@toStringTag   
arguments   
caller   
constructor
length
name
offsetX
offsetY
pageX  
pageY  
prototype
x
y