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