{"json_modified": "2016-03-28T08:43:32.919201", "uuid": "1f37b289-c776-4bca-8ded-c718911643ea", "title": "ServiceWorkerContainer.oncontrollerchange", "url": "/en-US/docs/Web/API/ServiceWorkerContainer/oncontrollerchange", "tags": ["API", "Interface", "Reference", "Property", "Experimental", "R\u00e9f\u00e9rence", "ServiceWorker", "Exp\u00e9rimental", "ServiceWorkerContainer", "Service Workers", "onchange"], "translations": [], "modified": "2016-03-17T13:46:01", "label": "ServiceWorkerContainer.oncontrollerchange", "localization_tags": [], "locale": "en-US", "id": 144265, "last_edit": "2016-03-17T13:45:58", "summary": "The <code><strong>oncontrollerchange</strong></code> property of the <a href=\"/en-US/docs/Web/API/ServiceWorkerContainer\" title=\"The ServiceWorkerContainer interface of the ServiceWorker 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.\"><code>ServiceWorkerContainer</code></a> interface is an event handler fired whenever a <code><a href=\"/en-US/docs/Web/Events/controllerchange\" title=\"/en-US/docs/Web/Events/controllerchange\">controllerchange</a></code> event occurs \u2014 when the document's associated <a href=\"/en-US/docs/Web/API/ServiceWorkerRegistration\" title=\"The ServiceWorkerRegistion interface of the ServiceWorker API represents the service worker registration. You register a service worker to control one or more pages that share the same origin.\"><code>ServiceWorkerRegistration</code></a>\u00a0acquires a new <a href=\"/en-US/docs/Web/API/ServiceWorkerRegistration/active\" title=\"The active property of the ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is activating or activated. This property is initially set to&#xA0;null.\"><code>ServiceWorkerRegistration.active</code></a>\u00a0worker.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}], "slug": "Web/API/ServiceWorkerContainer/oncontrollerchange", "review_tags": ["technical"]}