We have an array [1,2,3] and we want to remove [1,2] so that we end up with [3].
Approach
const arr = [1, 2, 3];
const three = arr.slice(2);
Thus when only one argument (2) is passed to slice as shown, it removes indexes up to that number. In this case it removes the items with indexes 0 and 1 and returns the resulting array [3].