ES6SeriesPart1_const.js

// sometimes used as lowercase as when setting up your server.
const express = require(‘express’);
const app = express();

// sometimes uppercase.
const DONT_CHANGE_ME_MAN = “I ain’t changing for no one, man.”

// change attempt #1 
const DONT_CHANGE_ME_MAN = “I told I ain’t changing for no one.”
// change attempt #2
var DONT_CHANGE_ME_MAN = “Still not changing, bro.”
// change attempt #3
DONT_CHANGE_ME_MAN = “Haha, nice try, still not happening.”

// same error for all 3 attempts, const value stays the same:
Uncaught TypeError: Identifier ‘const DONT_CHANGE_ME_MAN’ has already been declared.

// DONT_CHANGE_ME_MAN still results in “I ain’t changing for no one, man.”