Slice To Get Last Characters Of String

Syntax

The slice() method is a copying method.
It does not alter this but instead returns a shallow copy that contains some of the same elements as the ones from the original array.

slice()
slice(start)
slice(start, end)

start:
if start < 0, start + array.length is used.
if start < -array.length or start is omitted, 0 is used.
if start >= array.length, nothing is extracted.

end: extracts up to but not including end.
if end < 0, end + array.length is used.
if end < -array.length, 0 is used.
if end >= array.length or end is omitted, array.length is used, causing all elements until the end to be extracted.
if end is positioned before or at start after normalization, nothing is extracted.