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Node.js is an open-source, server-side script that runs on top of Google's open-source scripting engine, V8. Node.js is fast, lightweight and efficient. It uses the asynchronous mode of operation, event-driven Input/Output, rather than the traditional threads or separate threads for each process. It is a cross-platform JavaScript run-time environment that executes JavaScript code outside a browser. Node.js uses JavaScript for creating node applications, or we can use any other language that ultimately compiles to JavaScript (like TypeScript). JavaScript  is written the same way that it would be used  in any client-side application. 

Node.js is an excellent tool for building real-time web applications that increases the efficiency of the development process, as it fills the gap between front-end and back-end applications. 

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Node.js Documentation


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