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
Database
@@toStringTag    
arguments    
caller    
changeVersion   
name   
readTransaction   
transaction   
version   
DatabaseSync
@@toStringTag    
arguments    
caller    
changeVersion    
name    
readTransaction    
transaction    
version    
SQLError
@@toStringTag    
arguments    
caller    
code   
CONSTRAINT_ERR   
DATABASE_ERR   
message   
name   
QUOTA_ERR   
SYNTAX_ERR   
TIMEOUT_ERR   
TOO_LARGE_ERR   
UNKNOWN_ERR   
VERSION_ERR   
SQLResultSet
@@toStringTag    
arguments    
caller    
insertId   
name   
rows   
rowsAffected   
SQLResultSetRowList
@@iterator    
@@toStringTag    
arguments    
caller    
item   
length   
name   
SQLTransaction
@@toStringTag    
arguments    
caller    
executeSql   
name   
SQLTransactionSync
@@toStringTag    
arguments    
caller    
executeSql    
name    
Window
@@iterator    
@@toStringTag   
arguments   
caller   
openDatabase