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
HTMLDataElement
constructor 
length  
name 
prototype 
value 
HTMLDataListElement
constructor 
length  
name 
options 
prototype 
HTMLDirectoryElement
compact
constructor
length 
name
prototype
HTMLDivElement
align
constructor
length 
name
prototype
HTMLElement
accessKey
accessKeyLabel   
blur
click
constructor
dataset
dir
focus
hidden
lang
length 
name
onabort
onblur
oncancel   
oncanplay
oncanplaythrough
onchange
onclick
oncuechange 
ondblclick
ondurationchange
onemptied
onended
onerror
onfocus
oninput
oninvalid
onkeydown
onkeypress
onkeyup
onload
onloadeddata
onloadedmetadata
onloadstart
onmousedown
onmouseenter
onmouseleave
onmousemove
onmouseout
onmouseover
onmouseup
onmousewheel 
onpause
onplay
onplaying
onprogress
onratechange
onreset
onresize 
onscroll
onseeked
onseeking
onselect
onshow  
onstalled
onsubmit
onsuspend
ontimeupdate
ontoggle 
onvolumechange
onwaiting
prototype
spellcheck
tabIndex
title
translate  
HTMLEmbedElement
align 
constructor
height
length 
name
prototype
src
type 
width
HTMLFieldSetElement
checkValidity
constructor
disabled
elements 
form
length 
name
prototype
setCustomValidity
type 
validationMessage
validity
willValidate
HTMLFontElement
color
constructor
face
length 
name
prototype
size
HTMLFormControlsCollection
constructor
length 
name
namedItem
prototype
HTMLFormElement
acceptCharset
action
autocomplete
checkValidity
constructor
elements
encoding
enctype
length
method
name
noValidate
prototype
reset
submit
target