This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The query()
method of the LockManager
interface returns a Promise
that resolves with an object that contains information about held and pending locks.
var promise<LockManagerSnapshot> = LockManager.query()
None.
A Promise
that resolves with a LockManagerSnapshot
containing the following properties.
held
: An array of Lock
objects for held locks.pending
: An array of Lock
objects for pending lock requests.const state = await navigator.locks.query(); for (const lock of state.held) { console.log(`held lock: name ${lock.name}, mode ${lock.mode}`); } for (const request of state.pending) { console.log(`requested lock: name ${request.name}, mode ${request.mode}`); }
Specification | Status | Comment |
---|---|---|
Web Locks API The definition of 'query()' in that specification. | Draft | Initial definition. |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 69 | ? | ? | ? | 56 | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 69 | 69 | ? | ? | 56 | ? | ? |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/LockManager/query