Node.JS is an open-source, cross platform JavaScript run-time environment for executing JavaScript code server-side. It is built on Google Chrome’s JavaScript Engine and is used for creating scalable, event-driven applications.

Node.JS is not written in JavaScript, but it uses the JavaScript as an interpretive language for server-side request/response processing. It is intended to run on a dedicated HTTP server and to utilize a single thread with one process at a time.

Code built on Node platform does not follow the traditional model of receive, process, send, wait, receive. Rather, it processes incoming requests in a constant event stack and sends trivial requests one after the other without waiting for responses.


  • One of the most significant benefits is that it does not block input/output.
  • It is an open-source technology which includes a shared repository of dynamic tools and modules.
  • It trims all the problems involved with forming separate threads and instead uses a single thread.
  • JavaScript is now present in the browser as well as server, all thanks to Node.JS
  • It runs in a similar manner and is flexible in usage
  • It helps to build real-time web applications at a swift pace.
  • The event-driven architecture caters to both the client-side as well as server-side that are written in JavaScript.
  • It comes to rescue to proxy different services that have different response times or for gathering data from various sources.
  • With time, more and more developers are jumping on Node.JS due to which hosting is also gaining momentum.
  • It consists of a growing open source community that has delivered numerous spectacular modules.

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