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

The LockManager interface of the 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.


Requests a Lock object with parameters specifying its name and characteristics.
Returns a Promise that resolves with a LockManagerSnapshot which contains information about held and pending locks.


Specification Status Comment
Web Locks API
The definition of 'LockManager' in that specification.
Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support69 ? ? ?56 ?
query69 ? ? ?56 ?
request69 ? ? ?56 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support6969 ? ?56 ? ?
query6969 ? ?56 ? ?
request6969 ? ?56 ? ?

Document Tags and Contributors

Contributors to this page: jpmedley
Last updated by: jpmedley,