1. Offline web applications

    Now deprecated method of defining web page files to be cached using a cache manifest file, allowing them to work offline on subsequent visits to the page.

  2. Online/offline status

    Events to indicate when the user's connected (`online` and `offline` events) and the `navigator.onLine` property to see current status.

  3. navigator api: online

  4. windoweventhandlers api: ononline

  5. window api: `online` event

  6. workerglobalscope api: ononline

  7. workernavigator api: online

  8. html element: body: ononline