1/* ====== create node.js server with core 'http' module ====== */
2// dependencies
3const http = require("http");
4
5// PORT
6const PORT = 3000;
7
8// server create
9const server = http.createServer((req, res) => {
10   if (req.url === "/") {
11      res.write("This is home page.");
12      res.end();
13   } else if (req.url === "/about" && req.method === "GET") {
14      res.write("This is about page.");
15      res.end();
16   } else {
17      res.write("Not Found!");
18      res.end();
19   }
20});
21
22// server listen port
23server.listen(PORT);
24
25console.log(`Server is running on PORT: ${PORT}`);
26
27/* ========== *** ========== */
28
29/* ====== create node.js server with express.js framework ====== */
30// dependencies
31const express = require("express");
32
33const app = express();
34
35app.get("/", (req, res) => {
36   res.send("This is home page.");
37});
38
39app.post("/", (req, res) => {
40   res.send("This is home page with post request.");
41});
42
43// PORT
44const PORT = 3000;
45
46app.listen(PORT, () => {
47   console.log(`Server is running on PORT: ${PORT}`);
48});
49
50
51// ======== Instructions ========
52// save this as index.js
53// you have to download and install node.js on your machine
54// open terminal or command prompt
55// type node index.js
56// find your server at http://localhost:3000

1const http = require('http');
2
3const hostname = '127.0.0.1';
4const port = 3000;
5
6const server = http.createServer((req, res) => {
7  res.statusCode = 200;
8  res.setHeader('Content-Type', 'text/plain');
9  res.end('Hello World');
10});
11
12server.listen(port, hostname, () => {
13  console.log(`Server running at http://${hostname}:${port}/`);
14});