What is NodeJs? What are the advantages of using it?

Question

Q4 A What is NodeJs? What are the advantages of using it? Demonstrate the working of NodeJs by creating a simple server to display a “Welcome” message.

Answer 1

Node.js is an open-source, cross-platform runtime environment that allows developers to run JavaScript code outside the browser. It is built on the V8 JavaScript runtime and enables the execution of server-side JavaScript. Node.js is designed to be event-driven and non-blocking, making it efficient for building scalable and real-time applications.

Advantages : 

1. Single Language Development: Node.js allows developers to use JavaScript for both server-side and client-side development, promoting code reusability.

2. Fast Execution: Built on the V8 engine, Node.js provides rapid execution of JavaScript code, enhancing overall application performance.

3. Event-Driven Architecture: Node.js employs an event-driven, non-blocking I/O model, enabling efficient handling of concurrent connections and scalability.

4. NPM Ecosystem: Node Package Manager (NPM) provides a vast repository of open-source libraries and tools, streamlining the development process.

5. Scalability: Node.js is well-suited for building scalable applications due to its non-blocking architecture and efficient handling of multiple connections.

6. Active Community Support: With a large and active community, Node.js developers benefit from a wealth of resources, modules, and community-driven support.

7. Cross-Platform Compatibility: Node.js is cross-platform, allowing developers to run JavaScript code on various operating systems.

8. Real-Time Capabilities: Node.js is ideal for real-time applications like chat and gaming, thanks to its event-driven nature and low-latency communication.

9. Easy to Learn: JavaScript developers find it easy to transition to Node.js, reducing the learning curve for server-side development.

10. Middleware Support: Node.js supports middleware, allowing developers to extend the functionality of the server easily.

11. Built-in HTTP Module: Node.js includes a built-in HTTP module, simplifying the process of creating web servers.

12. Microservices Architecture: Node.js is well-suited for microservices architecture, facilitating the development of modular and scalable applications.

 

 

 

Code : 

https://www.doubtly.in/10695/demonstrate-working-node-creating-simple-server-display-welcome-message?show=10695#q10695