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

The LockManager interface of the Web Locks API provides methods for requesting a new Lock object and querying for an existing Lock object. To get an instance of LockManager, call navigator.locks.

Note: This feature is available in Web Workers

Instance methods


Requests a Lock object with parameters specifying its name and characteristics.


Returns a Promise that resolves with an object that contains information about held and pending locks.


Web Locks API
# api-lock-manager

Browser compatibility

BCD tables only load in the browser