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
HTMLLIElement
constructor
length 
name
prototype
type
value
HTMLLabelElement
constructor
control 
form
htmlFor
length 
name
prototype
HTMLLegendElement
align
constructor
form
length 
name
prototype
HTMLLinkElement
charset
constructor
crossOrigin 
disabled
href
hreflang
length 
media
name
prototype
rel
relList 
rev
sizes 
target
type
HTMLMapElement
areas
constructor
images    
length 
name
prototype
HTMLMarqueeElement
behavior 
bgColor 
constructor 
direction 
height 
hspace 
length  
loop 
name 
onbounce   
onfinish   
onstart   
prototype 
scrollAmount 
scrollDelay 
start 
stop 
trueSpeed 
vspace 
width 
HTMLMediaElement
addTextTrack
audioTracks 
autoplay
buffered
canPlayType
constructor
controller   
controls
crossOrigin
currentSrc
currentTime
defaultMuted
defaultPlaybackRate
duration
ended
error
getStartDate   
HAVE_CURRENT_DATA
HAVE_ENOUGH_DATA
HAVE_FUTURE_DATA
HAVE_METADATA
HAVE_NOTHING
length 
load
loop
mediaGroup   
muted
name
NETWORK_EMPTY
NETWORK_IDLE
NETWORK_LOADING
NETWORK_NO_SOURCE
networkState
pause
paused
play
playbackRate
played
preload
prototype
readyState
seekable
seeking
src
textTracks
videoTracks 
volume
HTMLMetaElement
constructor
content
httpEquiv
length 
name
prototype
scheme
HTMLMeterElement
constructor
high
labels  
length 
low
max
min
name
optimum
prototype
value
HTMLModElement
cite
constructor
dateTime
length 
name
prototype