Hello! This is my first tutorial, so if you find any mistakes or anything you want me to fix please say so in the comments!

How To Make A Web Server Using `Node.js`

Step 1: Include modules

For this we need the 'express' module
we can do this by using these lines of code:

const express = require('express');//Set up the express module
const app = express();
const router = express.Router();

we will also need the 'path' module:

const path = require('path')

Step 2: Set up the Express router

router.get('/', function(req, res){
  res.sendFile(path.join(__dirname, '/index.html/index.html'));
});
app.use('/', router);

when the user goes to https://www.[yourwebsite].com/
they will receive index.html.

but what if you want to have different pages?
Duplicate what we did before except, instead of just '/' you use '/yourpage'
or in my case, '/lol'

//if they go to '/lol'
router.get('/lol', function(req, res){
  res.sendFile(path.join(__dirname, '/lol.html'));
});
app.use('/lol', router);

(you can see it in action here: https://web-server-template--codingandmemes.repl.co/lol )

Side note: Errors

To send the user to a page when an error occurs, it is very similar to the navigation(see a 404 error in action here: https://web-server-template--codingandmemes.repl.co/thisnoexist )
on a 404 Error:

//404 Error
app.use(function(req, res, next) {
    res.status(404);
    res.sendFile(__dirname + '/404.html');
});

For any other error, you just have to update the res.status. for instance, on a 403 error: res.status(403) and so on, you also along with that have to update the directory: res.sendFile(__dirname + '/403.html');

Set up the Express server to listen on port 3000

let server = app.listen(3000, function(){
  console.log("App server is running on port 3000");
  console.log("to end press Ctrl + C");
});

And thats it! You can check out my template below!
(Note: if you want your server to stay up 24/7-ish use UptimeRobot. It pings your repl every 5 minutes, or the interval you set it too.)
Here is an example of my uptime robot for my server(its free)

Web Server Using Node.js