It's this simple:

[Reper2]

function isOdd(n) { n % 2 != 0 ? console.log("Number is odd.") : console.log("Number is even."); }

isOdd(1) // "Number is odd." isOdd(2) // "Number is even."

[oshalabydev]

I don't know if this is all a sick joke at that point.