server.js

const express = require('express');
// run: npm install express
const app = express();

// adding handling for browser's get request:
app.get('/', function(req, res) {
  res.send('<h1>Hello, world</h1>');
  // handling get request and responding with "hello"
});

app.get('/about', function (req,res) {
  res.send('<h1>About</h1>');
});

app.get('/hobbies', function (req,res) {
  res.send('<h1>Hobbies</h1>');
});

app.get('/contact', function (req,res) {
  res.send('<h1>Contact</h1>');
});


app.listen(3000, function() {
  console.log('server has started on port 3000');
  // using a callback func. to log our console msg 
  // once the server starts
});