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
activeElement
arguments   
caller   
caretPositionFromPoint   
constructor
elementFromPoint
elementsFromPoint 
getSelection
length
name
prototype
styleSheets
ShadowRoot
@@toStringTag   
activeElement  
arguments   
caller   
caretPositionFromPoint    
elementFromPoint  
elementsFromPoint  
getSelection   
host  
mode  
name  
styleSheets