Reference to slice of an array

How to get the reference to a slice of an array? var A = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’, ‘g’, ‘h’, ‘i’, ‘j’]; A.mySlice = function(l, h){return this.slice(l,h)}; var B = A.mySlice(1,5); // [“b”, “c”, …