fizzBuzz.js

// http://wiki.c2.com/?FizzBuzzTest

// Write a program that prints the numbers from 1 to 100.
// But for multiples of three print “Fizz” instead of the
// number and for the multiples of five print “Buzz”. For
// numbers which are multiples of both three and five
// print “FizzBuzz”.

var fizzBuzz = (function() {
  var FIZZ = 'Fizz';
  var BUZZ = 'Buzz';
  var output = '';

  for (var i = 1; i <= 100; i++) {
    if (i % 3 === 0 && i % 5 === 0) { // `if (i % 15 === 0) {`
      output += FIZZ + BUZZ;
    } else if (i % 3 === 0) {
      output += FIZZ;
    } else if (i % 5 === 0) {
      output += BUZZ;
    } else {
      output += i;
    }
  }

  return output;
})();

console.log(fizzBuzz);

// 12Fizz4BuzzFizz78FizzBuzz11Fizz1314FizzBuzz1617Fizz19BuzzFizz2223FizzBuzz26Fizz2829FizzBuzz3132Fizz34BuzzFizz3738FizzBuzz41Fizz4344FizzBuzz4647Fizz49BuzzFizz5253FizzBuzz56Fizz5859FizzBuzz6162Fizz64BuzzFizz6768FizzBuzz71Fizz7374FizzBuzz7677Fizz79BuzzFizz8283FizzBuzz86Fizz8889FizzBuzz9192Fizz94BuzzFizz9798FizzBuzz

fizzBuzz.v2.js

// Write a program that prints the numbers from 1 to 100.
// But for multiples of three print “Fizz” instead of the
// number and for the multiples of five print “Buzz”. For
// numbers which are multiples of both three and five
// print “FizzBuzz”.

var fizzBuzz = (function() {
  var FIZZ = 'Fizz';
  var BUZZ = 'Buzz';
  var FIZZBUZZ = FIZZ + BUZZ;

  var outputs = [];

  function reset() {
    outputs = [];
  }

  function output(i) {
    if (i % 3 === 0 && i % 5 === 0) { return FIZZBUZZ }
    if (i % 3 === 0) { return FIZZ }
    if (i % 5 === 0) { return BUZZ }
    return i + '';
  }

  function format() {
    return outputs.join('');
  }

  function loop() {
    outputs = [];
    for (var i = 1; i <= 100; i++) {
      outputs.push(output(i));
    }
    return format(outputs);
  }

  function recursive(i, limit) {
    outputs.push(output(i));
    if (i === limit) { return format(outputs) }
    return recursive(i + 1, limit);
  }

  return {
    reset: reset,
    loop: loop,
    recursive: recursive
  };
})();

console.log('output:', fizzBuzz.loop());

fizzBuzz.reset();
console.log('output:', fizzBuzz.recursive(1, 100));

// output: 12Fizz4BuzzFizz78FizzBuzz11Fizz1314FizzBuzz1617Fizz19BuzzFizz2223FizzBuzz26Fizz2829FizzBuzz3132Fizz34BuzzFizz3738FizzBuzz41Fizz4344FizzBuzz4647Fizz49BuzzFizz5253FizzBuzz56Fizz5859FizzBuzz6162Fizz64BuzzFizz6768FizzBuzz71Fizz7374FizzBuzz7677Fizz79BuzzFizz8283FizzBuzz86Fizz8889FizzBuzz9192Fizz94BuzzFizz9798FizzBuzz
// output: 12Fizz4BuzzFizz78FizzBuzz11Fizz1314FizzBuzz1617Fizz19BuzzFizz2223FizzBuzz26Fizz2829FizzBuzz3132Fizz34BuzzFizz3738FizzBuzz41Fizz4344FizzBuzz4647Fizz49BuzzFizz5253FizzBuzz56Fizz5859FizzBuzz6162Fizz64BuzzFizz6768FizzBuzz71Fizz7374FizzBuzz7677Fizz79BuzzFizz8283FizzBuzz86Fizz8889FizzBuzz9192Fizz94BuzzFizz9798FizzBuzz