NodeJS is a JavaScript runtime that allows JavaScript to run on the server-side instead of only in the browser. It uses an event-driven, non-blocking model that makes it lightweight and efficient for building highly scalable web servers, web services, real-time apps, apps with queued inputs, and data streaming apps. NodeJS' package ecosystem npm is the largest in the world, and many companies like Netflix, Uber, PayPal, and Walmart use NodeJS in production. JavaScript's growing popularity also means NodeJS can be used in many other places beyond just web servers.

2. What is NodeJS?

3. NodeJS is a JavaScript runtime built on Chrome's V8
JavaScript engine that runs JavaScript without browser

4. Why should I want this?

6. Using an event-driven, non-blocking I/O model, NodeJS
is lightweight and efficient with very little overhead

11. - Highly scalable web servers for web applications
- Web services (RESTful API)
- Real-Time apps as its supports Web-Sockets
- App with queued inputs
- Data streaming apps
What is it good for?

13. NodeJS' package ecosystem, npm, is the largest
ecosystem of open source libraries in the world

14. Who is using NodeJS?

15. Where else can I use NodeJS?

17. JavaScript is on its way to become a really universal
language