// The charAt() method returns the character at a specified index (position) in a string.
// The index of the first character is 0, the second 1, ...
// The index of the last character is string length - 1
let text = "HELLO WORLD";
let letter = text.charAt(0); // H
let text = "HELLO WORLD";
let letter = text.charAt(1); // E
let text = "HELLO WORLD";
let letter = text.charAt(text.length-1); // D