nodejs http code example

Example 1: nodejs http server

/* ====== create node.js server with core 'http' module ====== */
// dependencies
const http = require("http");

// PORT
const PORT = 3000;

// server create
const server = http.createServer((req, res) => {
   if (req.url === "/") {
      res.write("This is home page.");
      res.end();
   } else if (req.url === "/about" && req.method === "GET") {
      res.write("This is about page.");
      res.end();
   } else {
      res.write("Not Found!");
      res.end();
   }
});

// server listen port
server.listen(PORT);

console.log(`Server is running on PORT: ${PORT}`);

// ======== Instructions ========
// save this as index.js
// you have to download and install node.js on your machine
// open terminal or command prompt
// type node index.js
// find your server at http://localhost:3000

Example 2: node http request

const https = require('https')
const options = {
  hostname: 'whatever.com',
  port: 443,
  path: '/todos',
  method: 'GET'
}

const req = https.request(options, res => {
  console.log(`statusCode: ${res.statusCode}`)

  res.on('data', d => {
    process.stdout.write(d)
  })
})

req.on('error', error => {
  console.error(error)
})

req.end()

Example 3: node js response header

response.setHeader("Content-Type", "text/html");