Programming Web server with Node.js

The ability of Node.js is the quick programming of a Web server.

import * as file_system from 'fs';
import * as http from 'http';

const port = process.env['PORT'] || 8080; // Env. variable

const server = http.createServer((request, response) => {
    response.writeHead(200, {"Content-Type": "text/html; charset=utf-8"});
    file_system.readFile('./index.html', null, function (error, data) {
        if (error) {
            response.writeHead(404);
            response.write("Whoops! './index.html' not found...");
        } else
            response.write(data);
        response.end();
    });
}).listen(port);
console.log(`Server ready to accept requests on port ${port}... ctrl + C to abort...`);

Express is the most famous library for Node.js to go beyond basic Web server programming. Typically, Express supports routing facilities through the express.Router object type.

import * as path from "path";

import * as express from 'express';

const port = process.env['PORT'] || 8080; // Env. variable

const router: express.Router = express.Router();
const my_Web_application = express();
my_Web_application.use('/', router);
router.get('/', (request, response) => { // Without router: 'my_Web_application.get('/', (request, response) => { ...'
    response.setHeader("Content-Type", "text/html; charset=utf-8");
    response.statusCode = 200;
    response.sendFile(path.join(path.resolve(__dirname, '..') + path.sep + 'index.html'));
});
const server = my_Web_application.listen(port);
console.log(`Server ready to accept requests on port ${port}... ctrl + C to abort...`);

import * as path from "path";

import * as express from 'express';

const port = process.env['PORT'] || 8080; // Env. variable

const router: express.Router = express.Router();
const my_Web_application = express();

console.log(__dirname + path.sep + 'static'); // https://expressjs.com/en/starter/static-files.html

my_Web_application.use(express.static('static')); // This serves resources from 'static' folder...
my_Web_application.use('/', router);
router.get('/', (request, response) => {
    response.sendFile(path.join(path.resolve(__dirname, '..') + path.sep + 'index.html'));
});
// Test: http://localhost:8080/Franck
router.get('/Franck', (request, response) => {
    response.sendFile(path.join(path.resolve(__dirname, '..') + path.sep + 'static/Franck.jpg'));
});
// Test: http://localhost:8080/Static_page
router.get('/Static_page', (request, response) => {
    response.sendFile(path.join(path.resolve(__dirname, '..') + path.sep + 'static/Static_page.html'));
});
const server = my_Web_application.listen(port);

Download Server.Node.js.ts.zip