close() method of the
SharedWorkerGlobalScope interface discards any tasks queued in the
SharedWorkerGlobalScope's event loop, effectively closing this particular scope.
If you want to close your worker instance from inside the worker itself, you can call the following:
self.close() are effectively equivalent — both represent
close() being called from inside the worker's inner scope.
Note: There is also a way to stop the worker from the main thread: the
|HTML Living Standard
The definition of 'close()' in that specification.
General note: In newer browser versions,
close() is available on
DedicatedWorkerGlobalScope. In older browser versions, it is available on
WorkerGlobalScope. This change was made to stop
close() being available on service workers, as it isn't supposed to be used there and always throws an exception when called (see bug 1336043).