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
CSSStyleDeclaration
@@iterator 
@@toStringTag   
arguments   
caller   
name
touchAction 
touch-action   
Document
@@toStringTag   
@@unscopables
arguments   
caller   
constructor
length
name
ongotpointercapture 
onlostpointercapture 
onpointercancel 
onpointerdown 
onpointerenter 
onpointerleave 
onpointermove 
onpointerout 
onpointerover 
onpointerup 
prototype
Element
@@toStringTag   
@@unscopables
arguments   
caller   
hasPointerCapture  
name
ongotpointercapture    
onlostpointercapture    
releasePointerCapture 
setPointerCapture 
HTMLElement
@@toStringTag   
arguments   
caller   
constructor
length
name
ongotpointercapture 
onlostpointercapture 
onpointercancel 
onpointerdown 
onpointerenter 
onpointerleave 
onpointermove 
onpointerout 
onpointerover 
onpointerup 
prototype
Navigator
@@toStringTag   
arguments   
caller   
maxTouchPoints 
name
PointerEvent
@@toStringTag   
arguments   
caller   
constructor 
height 
isPrimary 
length 
name 
pointerId 
pointerType 
pressure 
prototype 
tangentialPressure  
tiltX 
tiltY 
twist  
width 
SVGElement
@@toStringTag   
arguments   
caller   
name
ongotpointercapture 
onlostpointercapture 
onpointercancel 
onpointerdown 
onpointerenter 
onpointerleave 
onpointermove 
onpointerout 
onpointerover 
onpointerup 
Window
@@iterator    
@@toStringTag   
arguments   
caller   
ongotpointercapture 
onlostpointercapture 
onpointercancel 
onpointerdown 
onpointerenter 
onpointerleave 
onpointermove 
onpointerout 
onpointerover 
onpointerup