more js quirks

following on from last js quirks post

isNaN([1,2,3]) //prints true

good. and array is not a number

isNaN([]) //prints false

err... so an empty array IS a number?

isNaN(true) isNaN(false) //both prints false

a boolean is a number? (I guess this one can be considered 1 or 0 respectively...)

conclusion, isNaN is weird...