var foods = ["kiwi","apple","banana"];
var banana = foods[foods.length - 1]; // Getting last element
const heroes = ["Batman", "Superman", "Hulk"];
const lastHero = heroes.pop(); // Returns last elment of the Array
// lastHero = "Hulk"
let arr = ['a', 'b', 'c']
arr.slice(-1)[0] // returns last element in an array