medium iter-prac llist.js

const spiderMan = {name: "Peter Parker", next: null};
const ironMan = {name: "Tony Stark", next: spiderMan};
const captainAmerica = {name: "Steve Rogers", next: ironMan};
const hulk = {name: "Bruce Banner", next: captainAmerica};
const hawkEye = {name: "Clint Barton", next: hulk};
const thor = {name: "Thor Odinson", next: hawkEye};
const drStrang = {name: "Stephen Strange", next: thor};
const head = {name: "Nick Fury", next: drStrang};