The Navigator.serviceWorker read-only property returns the ServiceWorkerContainer object for the associated document, which provides access to registration, removal, upgrade, and communication with the ServiceWorker.
Syntax
var workerContainerInstance = navigator.serviceWorker;
Value
Examples
This code checks if the browser supports service workers.
if ('serviceWorker' in navigator) {
// Supported!
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| Service Workers The definition of 'navigator.serviceWorker' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 40 | 44.0 (44.0)[1] | No support | 27 | No support |
| Feature | Android Webviw | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic support | 40 | 40 | 44.0 (44.0) | (Yes) | No support | 27 | No support |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)