Node JS lesson-1 for beginners.

Node JS BY RKP

Hello friends , how are you guys . you must be  listening about Node JS (NodeJs) . so before understanding my tutorials you need not required to be very much expert of Node js , only things you need to do is follow all my tutorials and lessons step by step . Basically Node is a platform which makes a way to excute Javascript . Before 2012 , a person can not be called as a Software Developer if he knows only Javascript , but now a person can not be called as a Software Developer if he or she do not know javascript . So Node Js is nothing but a Javascript . Why node js become very important ? Look friends whatever is happening on your browser is nothing but a Javascript , and we can understand importance of Browser in current time ,who is interested in window and window applications, everything from a movie to a game is running on browser ,it means Javascript is playing a vital role here . Many people may not like this lesson so you can keep for next lessons. Now if we understand Node Js from a company or a business prospective , see previously there used to be a a developer who generally used to work on JAVA or .NET or PHP and if it required he  write some javascript code. Now how javascript works is totally different than  how JAVA , .NET or PHP works so the problem is he used to face too many problem while writing code in javascript as he used to with writing code in Other languages (JAVA,PHP,.NET) . So with the help of Node Js ,now on server also there will be Javascript .It means a developer need not required to learn two different languages for Server and Client side . So simply if we talk about Node Js definition it is , Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside of a browser.Consequently, Node.js represents a "JavaScript everywhere" paradigm, unifying web application development around a single programming language, rather than different languages for server side and client side scripts.List of Companies who are using node JS ,GoDaddy,Groupon,IBM, LinkedIn, Microsoft, Netflix, PayPal,  Rakuten,  SAP, Voxer, Walmart, and Yahoo. V8 is the JavaScript execution engine which was initially built for Google Chrome. It was then open-sourced by Google in 2008. V8 engine is written in C++ ,it compiles JavaScript source code to native machine code instead of interpreting it in real time. Keep reading i will come with more in node jS.