Javascript was always a client side language until node.js.<br /> Common server side languages include PHP, Python, Perl, Ruby<br /> and several more. Node enables you to use Javascript server side.<br /> This now means you can have a consistent language both ends<br /> which could not be done prior to Node.

Node.js is an open-source, cross-platform,<br /> back-end JavaScript runtime environment<br /> that runs on the V8 engine and executes<br /> JavaScript code outside a web browser.

Javascript has existed since 1995 and has since taken over as the<br /> dominant language for web development. For much of its life, JavaScript<br /> was used mainly for client-side scripting inside <script> tags executing<br /> in web browsers. This limitation meant that developers were often working<br /> in many different languages and frameworks between the front-end<br /> (client-side) and backend (server-side) aspects of a web application.</p> <p>Although there were other projects to bring JavaScript to server-side<br /> applications, the functionality took off with the launch of Node.js in<br /> 2009. Node allows developers to write JavaScript code that runs<br /> directly in a computer process itself instead of in a browser.<br /> Node can, therefore, be used to write server-side applications<br /> with access to the operating system, file system, and everything<br /> else required to build fully-functional applications.

*<br /> Node.js is an open-source server side runtime environment built on<br /> Chrome’s V8 JavaScript engine. It provides an event driven, non-blocking<br /> (asynchronous) I/O and cross-platform runtime environment for building<br /> highly scalable server-side applications using JavaScript.

Node.js = Runtime Environment + JavaScript Library

NodeJs is Runtime environment for executing Js code, Outside Of Browser.<br /> it is build upon Chrome v8 engine using c++.</p> <p>Uses of Node:</p> <p>-can build back-end services like API which can be used as backend for<br /> diferent platform Apps(Website, MobileApp, Desktop App).</p> <p>-is Asynchronous by default means Single thread handle all the request<br /> and response, thereby providing more speed, highly scalable, built time half<br /> compare to other tech in market, 33% few line of code, 40% fewer files,<br /> can handle 2times more requests/secs, 35% fast response time.<br /> // Hope you like the short Description.

Node js allows you to run javascript outside of your browser<br /> ex: you are able to run it on your terminal

Node.js is an open-source, cross-platform, back-end JavaScript runtime environment that runs on the V8 engine and executes JavaScript code outside a web browser.

const { subtle } = require(‘crypto’).webcrypto;</p> <p>async function generateEcKey(namedCurve=”P-521″) {<br /> const {<br /> publicKey,<br /> privateKey<br /> } = await subtle.generateKey({<br /> name: ‘ECDSA’,<br /> namedCurve,<br /> }, true, [‘sign’, ‘verify’]);</p> <p> return { publicKey, privateKey };<br /> }

Node.js allows you to run JavaScript on the server.