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The IDBFactory interface of the IndexedDB API lets applications asynchronously access the indexed databases. The object that implements the interface is window.indexedDB. You open — that is, create and access — and delete a database with this object, and not directly with IDBFactory.

Note: This feature is available in Web Workers.

Methods

IDBFactory.open
The current method to request opening a connection to a database.
IDBFactory.deleteDatabase
A method to request the deletion of a database.
IDBFactory.cmp
A method that compares two keys and returns a result indicating which one is greater in value.
IDBFactory.databases
A method that returns a list of all available databases, including their names and versions.

Example

In the following code snippet, we make a request to open a database, and include handlers for the success and error cases. For a full working example, see our To-do Notifications app (view example live.)

// In the following line, you should include the prefixes of implementations you want to test.
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
// DON'T use "var indexedDB = ..." if you're not in a function.
// Moreover, you may need references to some window.IDB* objects:
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
// (Mozilla has never prefixed these objects, so we don't need window.mozIDB*)

// Let us open version 4 of our database
var DBOpenRequest = window.indexedDB.open("toDoList", 4);

// these two event handlers act on the database being opened successfully, or not
DBOpenRequest.onerror = function(event) {
  console.error("Error loading database.");
};
 
DBOpenRequest.onsuccess = function(event) {
  console.info("Database initialised.");
    
  // store the result of opening the database in the db variable. This is used a lot later on, for opening transactions and suchlike.
  db = DBOpenRequest.result;
};

Specifications

Specification Status Comment
Indexed Database API 2.0
The definition of 'IDBFactory' in that specification.
Recommendation
Indexed Database API Draft
The definition of 'IDBFactory' in that specification.
Recommendation
Unknown
The definition of 'IDBFactory' in that specification.
Unknown Introduced IDBFactory.databases method.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
IDBFactoryChrome Full support 24
Full support 24
No support 23 — 57
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support YesFirefox Full support 16
Full support 16
No support 10 — 16
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE Full support 10
Notes
Full support 10
Notes
Notes partial
Opera Full support 15Safari Full support 7WebView Android Full support Yes
Full support Yes
No support ? — 57
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Chrome Android Full support 25
Full support 25
No support 25 — 57
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox Android Full support 22Opera Android Full support 14Safari iOS Full support 8Samsung Internet Android Full support Yes
Full support Yes
No support ? — 7.0
Prefixed
Prefixed Implemented with the vendor prefix: webkit
cmpChrome Full support 24
Full support 24
No support 23 — 24
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support 12Firefox Full support 16
Full support 16
No support 10 — 16
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE Full support 10
Notes
Full support 10
Notes
Notes partial
Opera Full support 15Safari Full support 7WebView Android Full support Yes
Full support Yes
No support ? — ?
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Chrome Android Full support 25Firefox Android Full support 22Opera Android Full support 14Safari iOS Full support 8Samsung Internet Android Full support Yes
databases
Experimental
Chrome Full support 71Edge No support NoFirefox No support No
Notes
No support No
Notes
Notes See bug 934640.
IE No support NoOpera Full support 58Safari No support NoWebView Android Full support 71Chrome Android Full support 71Firefox Android No support No
Notes
No support No
Notes
Notes See bug 934640.
Opera Android Full support YesSafari iOS No support NoSamsung Internet Android No support No
deleteDatabaseChrome Full support 24
Full support 24
No support 23 — 24
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support 12Firefox Full support 16
Full support 16
No support 10 — 16
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE Full support 10
Notes
Full support 10
Notes
Notes partial
Opera Full support 15Safari Full support 7WebView Android Full support Yes
Full support Yes
No support ? — ?
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Chrome Android Full support 25Firefox Android Full support 22Opera Android Full support 14Safari iOS Full support 8Samsung Internet Android Full support Yes
openChrome Full support 24
Full support 24
No support 23 — 24
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support 12Firefox Full support 16
Full support 16
No support 10 — 16
Prefixed
Prefixed Implemented with the vendor prefix: moz
IE Full support 10
Notes
Full support 10
Notes
Notes partial
Opera Full support 15Safari Full support 7WebView Android Full support Yes
Full support Yes
No support ? — ?
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Chrome Android Full support 25Firefox Android Full support 22Opera Android Full support 14Safari iOS Full support 8Samsung Internet Android Full support Yes
Available in workersChrome Full support YesEdge Full support YesFirefox Full support 37IE ? Opera Full support YesSafari ? WebView Android Full support YesChrome Android Full support YesFirefox Android Full support 37Opera Android Full support YesSafari iOS ? Samsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also

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