JS: Number.isInteger

Number.isInteger(number)

Return true if number is a integer.

console.log(Number.isInteger(0));
console.log(Number.isInteger(0.0000));
console.log(Number.isInteger(new Number(3).valueOf()));

console.log(Number.isInteger(new Number(3)) === false);
console.log(Number.isInteger(0.00000000000000001) === false);
console.log(Number.isInteger(Infinity) === false);
console.log(Number.isInteger(NaN) === false);