StorageEvent

Constructor

StorageEvent(): Returns a newly constructed StorageEvent object.

Instance properties

In addition to the properties listed below, this interface inherits the properties of its parent interface, Event.

key Read only: Returns a string with the key for the storage item that was changed. The key attribute is null when the change is caused by the storage clear() method.
newValue Read only: Returns a string with the new value of the storage item that was changed. This value is null when the change has been invoked by storage clear() method, or the storage item has been removed from the storage.
oldValue Read only: Returns a string with the original value of the storage item that was changed. This value is null when the storage item has been newly added and therefore doesn't have any previous value.
storageArea Read only: Returns a Storage object that represents the storage object that was affected.
url Read only: Returns string with the URL of the document whose storage changed.

Instance methods

In addition to the methods listed below, this interface inherits the methods of its parent interface, Event.

initStorageEvent(): Initializes the event in a manner analogous to the similarly-named initEvent() method in the DOM Events interfaces. Use the constructor instead.

Specifications

Specification
HTML # the-storageevent-interface

Browser compatibility

	desktop					mobile							server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS	Deno
`StorageEvent`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 3 (Release date: 2011-02-22) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`StorageEvent()` constructor	Chrome – Full support Chrome 17 (Release date: 2012-02-08) footnote Full support	Edge – Full support Edge 17 (Release date: 2018-04-30) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – Full support Safari 6 (Release date: 2012-07-25) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 14 (Release date: 2013-05-21) footnote Full support	Safari on iOS – Full support Safari on iOS 6 (Release date: 2012-09-10) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 6 (Release date: 2012-09-10) footnote Full support	Deno – No support Deno footnote No support
`initStorageEvent` Deprecated	Chrome – Full support Chrome 4 (Release date: 2010-01-25) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`key`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`newValue`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`oldValue`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`storageArea`	Chrome – Full support Chrome 3 (Release date: 2009-09-15) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 4 (Release date: 2009-06-08) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 3 (Release date: 2009-06-17) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 3 (Release date: 2009-06-17) footnote Full support	Deno – No support Deno footnote No support
`url`	Chrome – Full support Chrome 6 (Release date: 2010-09-02) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 13 (Release date: 2012-06-05) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 5 (Release date: 2010-06-07) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 14 (Release date: 2012-06-26) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 5 (Release date: 2011-10-12) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 3 (Release date: 2011-02-22) footnote Full support	WebView on iOS – Full support WebView on iOS 5 (Release date: 2011-10-12) footnote Full support	Deno – No support Deno footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Deprecated. Not for use in new websites.

Constructor

Instance properties

Instance methods

Specifications

Browser compatibility

Legend

See also