ServiceWorkerContainer
The ServiceWorkerContainer interface of the Service Worker API provides an object representing the service worker as an overall unit in the network ecosystem, including facilities to register, unregister and update service workers, and access the state of service workers and their registrations. Available only in secure contexts.
Properties
The controller read-only property of the ServiceWorkerContainer interface represents the active service worker controlling the current page (associated with this ServiceWorkerContainer), or null if the page has no active or activating service worker.
The ready read-only property of the ServiceWorkerContainer interface provides a way of delaying code execution until a service worker is active.
Functions
The getRegistration() method of the ServiceWorkerContainer interface gets a ServiceWorkerRegistration object whose scope URL matches the provided client URL. The method returns a Promise that resolves to a ServiceWorkerRegistration or undefined.
The getRegistration() method of the ServiceWorkerContainer interface gets a ServiceWorkerRegistration object whose scope URL matches the provided client URL. The method returns a Promise that resolves to a ServiceWorkerRegistration or undefined.
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.
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.
The register() method of the ServiceWorkerContainer interface creates or updates a ServiceWorkerRegistration for the given scope. If successful, the registration associates the provided script URL to a scope, which is subsequently used for matching documents to a specific service worker.
The register() method of the ServiceWorkerContainer interface creates or updates a ServiceWorkerRegistration for the given scope. If successful, the registration associates the provided script URL to a scope, which is subsequently used for matching documents to a specific service worker.
The startMessages() method of the ServiceWorkerContainer interface explicitly starts the flow of messages being dispatched from a service worker to pages under its control (e.g., sent via Client.postMessage()). This can be used to react to sent messages earlier, even before that page's content has finished loading.