1function smallestCommons(arr) {
2  var max = Math.max(...arr);
3  var min = Math.min(...arr);
4  var candidate = max;
5
6  var smallestCommon = function(low, high) {
7    // inner function to use 'high' variable
8    function scm(l, h) {
9      if (h % l === 0) {
10        return h;
11      } else {
12        return scm(l, h + high);
13      }
14    }
15    return scm(low, high);
16  };
17
18  for (var i = min; i <= max; i += 1) {
19    candidate = smallestCommon(i, candidate);
20  }
21
22  return candidate;
23}
24
25smallestCommons([5, 1]); // should return 60
26smallestCommons([1, 13]); // should return 360360
27smallestCommons([23, 18]); //should return 6056820

1function smallestCommons(arr) {
2  var multiple = [];
3   arr.sort(function(a, b){
4    return a - b;
5    
6  });
7  var range = (start, stop, step) => Array.from({ length: (stop - start) / step + 1}, (_, i) => start + (i * step));
8  multiple =range(arr[0], arr[1], 1)
9  
10  let max = Math.max(...multiple)
11  
12  const small = (current) => n % current === 0;
13  let n = max * (max - 1)
14  let common = false;
15  common = multiple.every(small)
16  while(common === false){
17    n++
18    common = multiple.every(small)
19  }
20  
21  return n
22}
23smallestCommons([1,5]); //returns 60