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
Document
@@toStringTag   
@@unscopables
arguments   
caller   
constructor
length
name
onselectionchange
onselectstart
prototype
HTMLElement
@@toStringTag   
arguments   
caller   
constructor
length
name
onselectionchange    
onselectstart  
prototype
SVGElement
@@toStringTag   
arguments   
caller   
name
onselectionchange    
onselectstart  
Selection
@@toStringTag   
addRange
anchorNode
anchorOffset
arguments   
caller   
collapse
collapseToEnd
collapseToStart
containsNode
deleteFromDocument
empty
extend
focusNode
focusOffset
getRangeAt
isCollapsed
name
rangeCount
removeAllRanges
removeRange 
selectAllChildren
setBaseAndExtent
setPosition
toString
type
Window
@@iterator    
@@toStringTag   
arguments   
caller   
getSelection
onselectionchange    
onselectstart