Javascript how to create node js server

how to create a server in node js

// code by VARSHITH REDDY SATTI
// to create a server in node.js you should.
var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.write("write html code to display you test")
  res.end();
}).listen(8080);
// save this as httpServer.js
// run this by typing node httpServer.js in the command line
// to acess your server got to http://localhost:8080

create node server

const http = require('http')
const fs = require('fs')
const port = 3000

const server = http.createServer(function(req, res) {
    res.writeHead(200, {'Content-Type': 'text/html'})
    fs.readFile('index.html', function(error, data) {
        if (error) {
            res.writeHead(404)
            res.write('Error: File Not Found')
        } else {
            res.write(data)
        }
        res.end()
    })
})

server.listen(port, function(error) {
    if (error) {
        console.log('Something went wrong', error)
    } else {
        console.log('Server is listening on port ' + port)
    }
})

node js server

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => res.send('Hello World!'))

app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))

how to start a node server

// app.js

const http = require('http');
const fs = require('fs')

// Create an instance of the http server to handle HTTP requests
let app = http.createServer((req, res) => {
    // Set a response type of plain text for the response
    res.writeHead(200, {'Content-Type': 'text/html'});
    fs.createReadStream('index.html').pipe(res)
});

// Start the server on port 3000
app.listen(3000, '127.0.0.1');
console.log('Node server running on port 3000');

how to start node server

// app.js

const http = require('http');

// Create an instance of the http server to handle HTTP requests
let app = http.createServer((req, res) => {
    // Set a response type of plain text for the response
    res.writeHead(200, {'Content-Type': 'text/plain'});

    // Send back a response and end the connection
    res.end('Hello World!\n');
});

// Start the server on port 3000
app.listen(3000, '127.0.0.1');
console.log('Node server running on port 3000');

how to create node js server

const http = require('node:http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello, programmer!');
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

Source: nodejs.org

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