Navigator: serviceWorker property

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

The serviceWorker read-only property of the Navigator 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

Examples

This code checks if the browser supports service workers.

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

Specifications

Specification
Service Workers
# navigator-service-worker-attribute

Browser compatibility

desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
serviceWorker

See also