What is mean of this method print(input()[::-1]) in python

Question

Anyone tell me why, without using loop it print all letter of string.

Answer 1

input() returns the input string, and [::-1] reverses it.

Info about [::-1] can be found here: https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2453/

Answer 2

Can I use this method in JavaScript