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.

APIs by interface

API NameSpecificationsMicrosoft EdgeGoogle ChromeMozilla FirefoxApple Safari
HTMLMarqueeElement
@@toStringTag   
arguments   
behavior 
bgColor 
caller   
constructor 
direction 
height 
hspace 
length 
loop 
name 
onbounce   
onfinish   
onstart   
prototype 
scrollAmount 
scrollDelay 
start 
stop 
trueSpeed 
vspace 
width 
HTMLMediaElement
@@toStringTag   
addTextTrack
arguments   
audioTracks 
autoplay
buffered
caller   
canPlayType
controls
crossOrigin
currentTime
defaultMuted
defaultPlaybackRate
disableRemotePlayback   
duration
ended
error
fastSeek  
getStartDate   
HAVE_CURRENT_DATA
HAVE_ENOUGH_DATA
HAVE_FUTURE_DATA
HAVE_METADATA
HAVE_NOTHING
load
loop
muted
name
NETWORK_EMPTY
NETWORK_IDLE
NETWORK_LOADING
NETWORK_NO_SOURCE
networkState
pause
paused
playbackRate
played
preload
readyState
remote   
seekable
seeking
srcObject
textTracks
videoTracks 
volume
HTMLMenuElement
@@toStringTag   
arguments   
caller   
compact
constructor
length
name
prototype
HTMLMetaElement
@@toStringTag   
arguments   
caller   
constructor
content
httpEquiv
length
name
prototype
scheme
HTMLMeterElement
@@toStringTag   
arguments   
caller   
constructor
high
labels 
length
low
max
min
name
optimum
prototype
value
HTMLModElement
@@toStringTag   
arguments   
caller   
constructor
dateTime
length
name
prototype
HTMLOListElement
@@toStringTag   
arguments   
caller   
compact
constructor
length
name
prototype
reversed 
start
type
HTMLObjectElement
@@toStringTag   
align
archive
arguments   
caller   
checkValidity
code
codeBase
codeType
constructor
contentDocument
contentWindow 
declare
form
height
hspace
length
name
prototype
reportValidity 
setCustomValidity
standby
type
typeMustMatch   
validationMessage
validity
vspace
width
willValidate
HTMLOptGroupElement
@@toStringTag   
arguments   
caller   
constructor
disabled
label
length
name
prototype
HTMLOptionElement
@@toStringTag   
arguments   
caller   
constructor
defaultSelected
disabled
form
index
label
length
name
prototype
selected
text
value