ServiceWorkerContainer: getRegistrations() method
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
  The getRegistrations() method of the
  ServiceWorkerContainer interface gets all
  ServiceWorkerRegistrations associated with a
  ServiceWorkerContainer, in an array. The method returns a
  Promise that resolves to an array of
  ServiceWorkerRegistration.
Syntax
js
getRegistrations()
Parameters
None.
Return value
  A Promise that resolves to an array of
  ServiceWorkerRegistration objects.
Examples
js
navigator.serviceWorker.getRegistrations().then((registrations) => {
  document.querySelector("#status").textContent =
    "ServiceWorkerRegistrations found.";
});
Specifications
| Specification | 
|---|
| Service Workers # navigator-service-worker-getRegistrations | 
Browser compatibility
BCD tables only load in the browser