WorkerNavigator: serviceWorker property

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is only available in Web Workers.

The serviceWorker read-only property of the WorkerNavigator interface returns the ServiceWorkerContainer object for the associated document, which provides access to registration, removal, upgrade, and communication with the ServiceWorker.

The feature may not be available in private mode.

Value

This code checks if the browser supports using service worker in workers.

if ("serviceWorker" in navigator) {
  // Supported!
}

Specification
Service Workers # navigator-serviceworker

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