What is Nodejs?

In 2009, Node js was born by Ryan Dahl. The idea was the pick-up V8 engine (V8 is an open-source JavaScript engine developed by the Chromium Project for Google Chrome and Chromium web browsers) out side of web browser so can executes javascript codes at server side. Node js is not language but it is open source run-time environment for back-end scripting for in javascipt.

Node js uses by popular companies like Uber, Trello, PayPal, etc..