[have_faith]

It makes no difference but for some reason I feel the urge to shorten the last line to:

lightsOn = !lightsOn;

I'll see myself out.

[Cshelton]

Every time I write that in JavaScript, I delete it and just use ! As well haha

[polishninja]

Don't forget to turn off the light on your way out.

lightsOn = !lightsOn || lightsOn