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
MIDIAccess
@@toStringTag   
arguments   
caller   
inputs   
name   
onstatechange   
outputs   
sysexEnabled   
MIDIConnectionEvent
@@toStringTag   
arguments   
caller   
constructor   
length   
name   
port   
prototype   
MIDIInput
@@toStringTag   
arguments   
caller   
name   
onmidimessage   
MIDIInputMap
@@iterator   
@@toStringTag   
arguments   
caller   
entries   
forEach   
get   
has   
keys   
length   
name   
size   
values   
MIDIMessageEvent
@@toStringTag   
arguments   
caller   
constructor   
data   
length   
name   
prototype   
receivedTime    
MIDIOutput
@@toStringTag   
arguments   
caller   
clear    
name   
send   
MIDIOutputMap
@@iterator   
@@toStringTag   
arguments   
caller   
entries   
forEach   
get   
has   
keys   
length   
name   
size   
values   
MIDIPort
@@toStringTag   
arguments   
caller   
close   
connection   
id   
manufacturer   
name   
onstatechange   
open   
state   
type   
version   
Navigator
@@toStringTag   
arguments   
caller   
name
requestMIDIAccess