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WindowEventHandlers.onstorage

The WindowEventHandlers.onstorage property contains an event handler that runs when the storage event fires. This occurs when a storage area is changed (e.g. a new item is stored.)

Syntax

windowObj.onstorage = function() { ... };

Examples

window.onstorage = function(e) {
  console.log('The ' + e.key + ' key has been changed from ' + e.oldValue + ' to ' + e.newValue + '.');
};

Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'onstorage' in that specification.
Living Standard  

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? (Yes) 45 (45) ? ? ?
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? ? (Yes) 45.0 (45) ? ? ? ? ?

Document Tags and Contributors

 Contributors to this page: erikadoyle, teoli, chrisdavidmills
 Last updated by: erikadoyle,