Solution to @terakilobyte's problemset, posted at: 12-05-2015 4:05AM GMT+2 in FreeCodeCamp's Slack #general chatroom

FCC Solution

/*
 * solved by Maximization on 12 May 2015
 * 
 * PROBLEM STATEMENT
 * I want you to iterate through the range n = (1, 200). If n modulo any key on the object === 0, 
 * I want you to subtract (so the negatives will add, yes) the value the key associates to and tell 
 * me the value after you iterate through the range. Start with a sum of 0.
 */

// object to check against
var obj = {
  7: 3,
  18: 12,
  14: -5,
  6: 2,
  24: -12,
  11: 1,
  2: 4,
  4: -2
};

function moduloSummation(obj, range) {
  var sum = 0;
  
  for (var i = 1; i <= range; i++) {
    for (var key in obj) {
      if (key % i === 0) {
        sum += obj[key];
      }
    }
  }
  
  return sum;
}

console.log(moduloSummation(obj, 200));