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Node.js is a software system designed for writing highly-scalable internet applications, notably web servers.[1] Programs are written inJavaScript, using event-drivenasynchronous I/O to minimize overhead and maximize scalability.[2] Node.js consists of Google's V8 JavaScript engine plus several built-in libraries.
Node.js was created by Ryan Dahl starting in 2009, and its growth is sponsored by Joyent, his employer.[3][4]
Similar environments written in other programming languages include Twisted for PythonPerl Object Environment for Perllibevent for C and EventMachine for Ruby. Unlike most JavaScript, it is not executed in a web browser, but is instead a form of server-side JavaScript. Node.js implements some CommonJS specifications.[5] Unlike most JavaScript systems, it provides a REPL environment for interactive testing.


This is a complete implementation of hello world as a HTTP Server in Node.js:
var http = require('http');
http.createServer(function (request, response) {
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('Hello World\n');
console.log('Server running at');

This is a simple TCP server which listens on port 7000 and echoes 'hello' upon connection:
var net = require('net');
net.createServer(function (stream) {
    stream.on('end', function () {


Node.js has a active developer community primarily centered on two mailing lists, nodejs and nodejs-dev, and the IRC channel #node.js on freenode. The community gathers atNodeConf, an annual developer conference focused on Node.js.[6]


  1. Windows 7 product key 2023 is an alphanumeric code used to install or reinstall Microsoft latest OS to find it on a label inside your copy of Windows under .Win 7 Ultimate Key


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