const conditionalSum = function(values, condition) {

let odd = 0;

for (let i = 0; i < values.length; i++){
  if (values[i] % 2 === 0 && condition === "even"){
    odd += values[i];

  } else if (values[i] % 2 !== 0 && condition === "odd"){
    odd += values[i];
  }
}
return odd;
}

console.log(conditionalSum([1, 2, 3, 4, 5], "even"));
console.log(conditionalSum([1, 2, 3, 4, 5], "odd"));
console.log(conditionalSum([13, 88, 12, 44, 99], "even"));
console.log(conditionalSum([], "odd"));


// outputs: 6   9   144   0