Intermediate Javascript - Smallest Common Multiple

JavaScript
8

I’m really sorry for that i don’t mean it but i was writing just 3 back ticks after i close with 3 others according to this link Markdown Code Formatting i need to press [shift +enter] i’ m not doing it for a purpose please if it s not the right way correct me again here s my code

function gcd(arr) {
   var a=arr[0];
   var b=arr[1]
    do {
      if (a > b) {
        a = a % b;
      }
      if (a < b) {
        b = b % a;
      }
    } while ((a > 0) && (b > 0))
    if (a > b) return a
    if (b > a) return b
  }
  console.log(gcd([1, 5]))
  
  function lcm(arr) {
    let x=arr[0]
    let y=arr[1]
    let lcd = Math.abs(x * y) / gcd(arr);
    console.log(lcd);
    
    return lcd
  }
  function smallestCommon(arr)
  {let i=arr[0]
    let j=arr[1]
    for (i;i<=j;i++)
                 {
                    if(lcm(arr) % i ==0)
                    return lcm(arr)
                    else
                    {
   /*problem here how to come back to a greater
 common multiple if not evenly divisible
 by all numbers in the range of the array*/
                    }
                }   
  }
  console.log(lcm([1, 5]))
  console.log(smallestCommon([1,5]))

i wish it s formatted now :cold_face: :disappointed_relieved: