so it turns out there is an array there, hadn't seen it..
var product_features = ['draggable','trackable','colorable'];
so I did:
var prod_features = $('.draggable,.trackable,.colorable');
which did exactly what they wanted... but they probably want me to do it using the array.. how would I do this using the array??
also, found something very interesting...
I thought I would have to first remove the elements I need to move to the other div (there is a .remove() method), but it turns out that .append moves them, i.e., it removes elements from where they are, meaning it moves the elements, it doesn't copy them.. that's cool.. (so what if you want to copy them??)