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