'deviceorientation' In Firefox?

I'm working with 'deviceorientation' on my laptop and an example jsfiddle seems to work fine in Chrome but is not responding in Firefox. I think that line 15 of JS is not working

Solution 1:

Firefox does not, at this time of writing, expose DeviceOrientation events on any Desktop platform. Your event handler is not triggered in Firefox simply for the reason that the API is not enabled in their Desktop browser builds.

On the other hand, Chromium-based browsers have enabled DeviceOrientation events with some important caveats. Chromium-based browsers generally only return DeviceOrientation events consistently on Mac OS X due to the general availability of gyro + accelerometer hardware sensors that are available in Apple computers. Additionally, Chromium-based browsers report the event.alpha value as undefined due to no compass or magnetic sensors being available to compute that correctly.

The situation on mobile browsers is much better and is arguably the main target for this API. All major mobile browsers (Safari on iOS, Chrome/Opera/Firefox on Android) do support this event in its un-prefixed form i.e. window.addEventListener('deviceorientation', function(event) { /* ... */ }, false).