array-index.js

/*
Array index number start from 0.
By our human nature we start counting from 1 but JavaScript doesn't follow the rules. He likes to start counting from 0. So first index number of an array is 0.
If you put 5 elements then first element index number is 0 and last element index number is 4. To access the specific element of array we use array[index-number].
*/

const marvelHeroes = [
  "Iron Man",
  "Captain America",
  "Thor",
  "Black Widow",
  "Black Panther",
  "Spider Man",
  "Wanda",
  "Vison",
  "Hawkeye",
  "Hulk",
];

console.log(marvelHeroes[0]);
console.log(marvelHeroes[1]);
console.log(marvelHeroes[2]);
console.log(marvelHeroes[3]);
console.log(marvelHeroes[4]);
console.log(marvelHeroes[5]);
console.log(marvelHeroes[6]);
console.log(marvelHeroes[7]);
console.log(marvelHeroes[8]);
console.log(marvelHeroes[9]);