As documentation is moving forward, this page will be updated accordingly: APIs that are fully documented are pushed at the bottom of the page and ongoing documentation is put on top.
The status read-only property of the Response interface contains the status code of the response (e.g., 200 for a success).
The Battery Status API, more often referred to as the Battery API, provides information about the system's battery charge level and lets you be notified by events that are sent when the battery level or charging status change. This can be used to adjust your app's resource usage to reduce battery drain when the battery is low, or to save changes before the battery runs out in order to prevent data loss.