1_Multiples_of 3_and_5

/*If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000. */

function multiples(num1, num2) {
    var sum = 0;
  for(var i = 0; i < 1000; i++) {
    if(i % num1 === 0 || i % num2 === 0) {
        sum += i;
    }  
  }
  return sum;
}
multiples(3, 5);