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
HTMLElement
@@toStringTag   
arguments   
caller   
constructor
inputMethodContext    
length
name
prototype
InputMethodContext
@@toStringTag    
arguments    
caller    
compositionEndOffset    
compositionStartOffset    
getCandidateWindowRect    
getCompositionAlternatives    
name    
oncandidatewindowhide    
oncandidatewindowshow    
oncandidatewindowupdate    
target