Function JavaScript FizzBuzz

fizzbuzz.js

var fizzWord = function(x) {
  if (!(x % 15))
    return "fizzbuzz";
  else if (!(x % 3))
    return "fizz";
  else if (!(x % 5))
    return "buzz";
  else
    return x;
};

var fizzBuzz = function(max) {
  return Array
    .apply(null, { length: max+1 })
    .map(Number.call, Number)
    .splice(1)
    .map(fizzWord);
};