Experimental
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
which resolves
with an object containing information about held and pending locks.
Syntax
var promise<LockManagerSnapshot> = LockManager.query()
Parameters
None.
Return value
A Promise
that resolves with a LockManagerSnapshot
containing the following properties.
Example
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}`);
}
Specifications
Specification | Status | Comment |
---|---|---|
Web Locks API The definition of 'query()' in that specification. |
Draft | Initial definition. |
Browser compatibility
BCD tables only load in the browser