IDBDatabase.onclose

The onclose event handler of the IDBDatabase interface handles the close event, which is fired when the database is unexpectedly closed. This can happen, for example, when the application is shut down or access to the disk the database is stored on is lost while the database is open.

The close event is fired after all transactions have been aborted and the connection has been closed.

Note: This feature is available in Web Workers.

Syntax

IDBDatabase.onclose = function(event) { ... };

Value

A function which is called when the close event is fired.

Example

db.onclose = function(event) {
  myAppShowAlert('The database "' + db.name + '" has unexpectedly closed.');
};

Specifications

Specification Status Comment
Indexed Database API Draft
The definition of 'onclose' in that specification.
Recommendation

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
oncloseChrome Full support 31
Notes
Full support 31
Notes
Notes approx
Edge Full support ≤18Firefox Full support 50IE ? Opera Full support YesSafari Full support 10.1WebView Android Full support YesChrome Android Full support 31Firefox Android Full support 50Opera Android Full support YesSafari iOS Full support 10.3Samsung Internet Android Full support 2.0

Legend

Full support
Full support
Compatibility unknown
Compatibility unknown
See implementation notes.
See implementation notes.

See also