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
Document
@@toStringTag   
@@unscopables
arguments   
caller   
constructor
length
name
prototype
Node
@@toStringTag   
arguments   
caller   
name
XPathEvaluator
@@toStringTag   
arguments   
caller   
createExpression
createNSResolver
evaluate
name
XPathExpression
@@toStringTag   
arguments   
caller   
evaluate
name
XPathNSResolver
@@toStringTag    
arguments    
caller    
lookupNamespaceURI   
name   
XPathNamespace
@@toStringTag    
arguments    
caller    
name    
ownerElement    
XPATH_NAMESPACE_NODE    
XPathResult
@@toStringTag   
ANY_TYPE
ANY_UNORDERED_NODE_TYPE
arguments   
BOOLEAN_TYPE
booleanValue
caller   
FIRST_ORDERED_NODE_TYPE
invalidIteratorState
iterateNext
name
NUMBER_TYPE
numberValue
ORDERED_NODE_ITERATOR_TYPE
ORDERED_NODE_SNAPSHOT_TYPE
resultType
singleNodeValue
snapshotItem
snapshotLength
STRING_TYPE
stringValue
UNORDERED_NODE_ITERATOR_TYPE
UNORDERED_NODE_SNAPSHOT_TYPE