pop javascript mdn code example
Example 1: js array pop
var array = ['A', 'B', 'C'];
// removes and returns last element
lastElement = array.pop();
Example 2: js array.pop
let cats = ['Bob'];
cats.unshift('Willy'); // ['Willy', 'Bob']
cats.unshift('Puff', 'George'); // ['Puff', 'George', 'Willy', 'Bob']