NodeJS is an open-source, cross-platform JavaScript runtime environment that allows developers to run JavaScript code outside the web browser. It was created by Ryan Dahl in 2009 and is built on the powerful V8 JavaScript engine used in Google Chrome. NodeJS makes it possible to build fast and scalable server-side applications using JavaScript.

NodeJS follows an event-driven and non-blocking I/O model, which allows applications to handle many requests at the same time without slowing down the system. Because of this, it is widely used for building APIs, real-time applications, and scalable web servers.

These NodeJs Handwritten Notes are designed to help students and beginners understand the core concepts of NodeJS in a simple way. The NodeJs Handwritten Notes PDF contains clearly written explanations of important topics, making it easier for learners to revise and build a strong foundation in NodeJS development.