Here's an iterative JS version I just came up with, don't judge too harshly but I think it works (also there's a missing ] in their example): https://codepen.i

Here's an iterative JS version I just came up with, don't judge too harshly but I think it works (also there's a missing ] in their example): https://codepen.io/winrid/pen/JjajYGR https://codepen.io/winrid/pen/JjajYGR