Web/API/Window/storage event

The storage event of the Window interface fires when a storage area (localStorage) has been modified in the context of another document.

Bubbles	No
Cancelable	No
Interface	StorageEvent
Event handler property	onstorage

Examples

Log the sampleList item to the console when the storage event fires:

window.addEventListener('storage', () => {
  // When local storage changes, dump the list to
  // the console.
  console.log(JSON.parse(window.localStorage.getItem('sampleList')));    
});

The same action can be achieved using the onstorage event handler property:

window.onstorage = () => {
  // When local storage changes, dump the list to
  // the console.
  console.log(JSON.parse(window.localStorage.getItem('sampleList')));    
};

Specifications

Specification	Status
HTML Living StandardThe definition of 'storage' in that specification.	Living Standard

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
storage event	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

See also

• Web Storage API
• Using the Web Storage API

Window: storage event by Mozilla Contributors is licensed under CC-BY-SA 2.5.