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This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
Specifies an event listener to receive
disabled events. Those events occur when the device's Bluetooth is turned off.
navigator.mozBluetooth.ondisabled = funcRef
funcRef is a function to be called when the
disabled event occurs.
Not part of any specification yet. It should be discussed as part of the W3C's System Applications Working Group.