With JavaScript and the V8 engine at the core, an event-driven architecture, and scalability out of the box, Node.js has quickly become the new de facto standard for creating web applications and SaaS products. Many frameworks like Express, Sails, and Socket.IO enable users to quickly bootstrap applications and focus only on the business logic.
Of course Node.js owes much to JavaScript for its enormous popularity. JavaScript is a multiparadigm language that supports many different styles of programming, including functional programming, procedural programming, and object-oriented programming. It allows the developer to be flexible and take advantage of the various programming styles.
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