FizzBuzz

fizzbuzz.js

function cat(a,b,c){
  return c ? (a + b) : (a);
}

function fizz(i,s){
  return cat(s,"Fizz", (i%5===0));
}

function buzz(i,s){
  return cat(s,"Buzz", (i%3===0));
}

function number(i,s){
  return cat(s, i.toString(),((i%3!==0) && (i%5!==0)));
}

for(var i=1; i <= 20; i++){
  console.log(number(i, buzz(i, fizz(i, ""))));
}