http://www.freecodecamp.com/mtroiani 's solution for Bonfire: Factorialize a Number

gistfile1.txt

// Bonfire: Factorialize a Number
// Author: @mtroiani
// Challenge: http://www.freecodecamp.com/challenges/bonfire-factorialize-a-number
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function factorialize(num) {
  var i = 1
  var product = 1
  while (i <= num) {
    product = product * i;
    i ++;
  }
  return product;
}

factorialize(5);