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
HTMLMediaElement
@@toStringTag   
arguments   
caller   
mediaKeys 
name
onencrypted 
onwaitingforkey  
setMediaKeys 
MediaEncryptedEvent
@@toStringTag   
arguments   
caller   
constructor 
initData 
initDataType 
length 
name 
prototype 
MediaKeyMessageEvent
@@toStringTag   
arguments   
caller   
constructor 
length 
message 
messageType 
name 
prototype 
MediaKeySession
@@toStringTag   
arguments   
caller   
close 
closed 
expiration 
generateRequest 
keyStatuses 
load 
name 
onkeystatuseschange  
onmessage  
remove 
sessionId 
update 
MediaKeyStatusMap
@@iterator 
@@toStringTag   
arguments   
caller   
entries 
get 
has 
keys 
name 
size 
values 
MediaKeySystemAccess
@@toStringTag   
arguments   
caller   
createMediaKeys 
getConfiguration 
keySystem 
name 
MediaKeys
@@toStringTag   
arguments   
caller   
createSession 
name 
setServerCertificate 
Navigator
@@toStringTag   
arguments   
caller   
name
requestMediaKeySystemAccess