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
HTML Standard (HTML)
# event-storage

Browser compatibility

BCD tables only load in the browser

See also