According to Javascript, null is a number.

also, "NaN" is not a number

@asgs well, NaN is short for Not a Number so that's in the name...

@Bikonja Err, I was trying to be funny, but failed miserably

@asgs well you're either funny for posting or for failing, it's a foolproof plan :D

But NaN is actually a valid floating point number in JS.

#themoreyouknow

Also: null is an object according to JS.
Try it: typeof null

@theZorgEffect even that makes some sense to me as a variable that holds an object can hold null to specify it's empty (a reference type), but numbers are value types and value types can not be null so null being a number makes no sense.