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

The name read-only property of the Lock interface returns the name passed to LockManager.request selected when the lock was requested.

The name of a lock is given by script when the lock is requested. The name is selected by the developer to represent some abstract resource for which use is being coordinated across multiple tabs, workers, or other code within the origin. For example, if only one tab of a web application should be synchronizing network resources with an offline database, it could use a lock name such as "net_db_sync"


var name = Lock.name


A DOMString.


The following examples show how the name property passed in the call to LockManager.request()LockManager is the object returned by navigator.locks.

navigator.locks.request("net_db_sync", show_lock_properties);

function show_lock_properties(lock) {
  console.log(`The lock name is: ${lock.name}`);
  console.log(`The lock mode is: ${lock.mode}`);


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

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Chrome Full support 69Edge ? Firefox ? IE ? Opera Full support 56Safari ? WebView Android Full support 69Chrome Android Full support 69Edge Mobile ? Firefox Android ? Opera Android Full support 56Safari iOS ? Samsung Internet Android ?


Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: mdnwebdocs-bot, jpmedley
Last updated by: mdnwebdocs-bot,