The onstorage
property of the WindowEventHandlers
mixin is an EventHandler
for processing storage
events.
The storage
event fires when a storage area has been changed in the context of another document.
Syntax
window.onstorage = functionRef;
Value
functionRef
is a function name or a function expression. This function receives a StorageEvent
as its sole argument.
Example
This example logs the value for a storage key whenever it changes in another document.
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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
onstorage | Chrome Full support 1 | Edge Full support ≤18 | Firefox Full support 45 | IE ? | Opera Full support 15 | Safari ? | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 45 | Opera Android Full support 14 | Safari iOS ? | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown