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
IDBCursor
advance
constructor
continue
delete
direction
key
length 
name
primaryKey
prototype
source
update
IDBCursorWithValue
constructor
length 
name
prototype
value
IDBDatabase
close
constructor
createObjectStore
deleteObjectStore
length 
name
objectStoreNames
onabort
onerror
onversionchange 
prototype
transaction
version
IDBFactory
cmp
constructor
deleteDatabase
length 
name
open
prototype
IDBIndex
constructor
count
get
getKey
keyPath
length 
multiEntry 
name
objectStore
openCursor
openKeyCursor
prototype
unique
IDBKeyRange
bound
constructor
length 
lower
lowerBound
lowerOpen
name
only
prototype
upper
upperBound
upperOpen
IDBObjectStore
add
autoIncrement 
clear
constructor
count
createIndex
delete
deleteIndex
get
index
indexNames
keyPath
length 
name
openCursor
prototype
put
transaction
IDBOpenDBRequest
constructor
length 
name
onblocked
onupgradeneeded
prototype
IDBRequest
constructor
error
length 
name
onerror
onsuccess
prototype
readyState
result
source
transaction
IDBTransaction
abort
constructor
db
error
length 
mode
name
objectStore
onabort
oncomplete
onerror
prototype