array pop last and first code example

Example 1: js remove first and last element from array

a = [1,2,3,4]
b = a.slice(1,-1);

Example 2: js array.pop

let cats = ['Bob'];

cats.unshift('Willy'); // ['Willy', 'Bob']

cats.unshift('Puff', 'George'); // ['Puff', 'George', 'Willy', 'Bob']