Configurable FizzBuzz

fizzBuzz.js

// Tired of seeing if else if else if else in fizzbuzz exercise I created
// this configurable FizzBuzz that uses only one if statement.
// https://jsfiddle.net/kevinchappell/44jrznbj/

/**
 * Configurable fizzBuzz
 * @param  {Object} args
 * @param  {Number} until number of iterations
 * @return {String} output
 */
function fizzBuzz(args, until) {
  var keys = Object.keys(args),
    argsLength = keys.length,
    output = [];

  until = until + 1;

  for (var i = 1; i < until; i++) {
    var values = [];
    for (var x = 0; x < argsLength; x++) {
      var key = parseInt(keys[x]);
      if (i % key === 0) {
        values.push(args[key]);
      }
    }
    output.push(i + ': ' + values.join(' '));
  }

  return output.join('\n');
}


// Usage:
// define and config object for your fizzbuzz where the key is 
// the number of iterations to make before outputting the value

// key is multiple, value is output
var args = {
  3: "Fizz",
  5: "Buzz"
};

console.log(fizzBuzz(args, 15));