Finding the LCM of a range of numbers

Question

I read an interesting DailyWTF post today, \"Out of All The Possible Answers...\" and it interested me enough to dig up the original forum post where it was submitted. This

Answer 1

Here's my javascript solution, I hope you find it easy to follow:

function smallestCommons(arr) {
  var min = Math.min(arr[0], arr[1]);
  var max = Math.max(arr[0], arr[1]);

  var smallestCommon = min * max;

  var doneCalc = 0;

  while (doneCalc === 0) {
    for (var i = min; i <= max; i++) {
      if (smallestCommon % i !== 0) {
        smallestCommon += max;
        doneCalc = 0;
        break;
      }
      else {
        doneCalc = 1;
      }
    }
  }

  return smallestCommon;
}