Window: sharedStorage property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The global read-only sharedStorage property returns the WindowSharedStorage object for the current origin. This is the main entry point for writing data to shared storage using the Shared Storage API.

Note: sharedStorage is not available inside workers. It is implemented by Window and is also available in shared storage worklets (see SharedStorageWorkletGlobalScope.sharedStorage, which returns WorkletSharedStorage).

Value

A WindowSharedStorage object instance.

Examples

js
window.sharedStorage
  .set("ab-testing-group", "0")
  .then(console.log("Value saved to shared storage"));

Specifications

Specification
Shared Storage API
# dom-window-sharedstorage

Browser compatibility

BCD tables only load in the browser

See also