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 |
|---|---|---|
| HTML Living Standard The definition of 'onstorage' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | ? | Yes | 45 | ? | ? | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | No | No | Yes | 45 | ? | ? | ? |