Node.js is an open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a web browser. It is designed to build scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.
Example:
Let’s say you want to create a web application that displays real-time data from a database. You can use Node.js to create a web server that connects to the database and serves the data to your web application as it changes. The web server can also respond to requests from the web application, allowing you to create a dynamic web application.