NodeJS_WebApp_Dev slides for begginers

1. Web Application Development
with Node.js
• Building Scalable Server-Side Applications

2. Introduction to Node.js
• - Open-source, cross-platform JavaScript
runtime
• - Built on Chrome's V8 JavaScript engine
• - Enables JavaScript for server-side
programming

3. Why Node.js?
• - Non-blocking, event-driven architecture
• - High performance for I/O-heavy apps
• - Large ecosystem with npm (Node Package
Manager)
• - Used by companies like Netflix, PayPal,
LinkedIn

4. Key Features of Node.js
• - Asynchronous and event-driven
• - Single-threaded but highly scalable
• - npm with 1M+ packages
• - Cross-platform and lightweight

5. Node.js Development Workflow
• 1. Install Node.js and npm
• 2. Initialize project (npm init)
• 3. Create server (using http/Express.js)
• 4. Connect to Database (MongoDB, MySQL,
PostgreSQL)
• 5. Develop APIs and middleware
• 6. Deploy (Heroku, AWS, DigitalOcean)

6. Example Node.js App Structure
• - /project
• • server.js
• • package.json
• • routes/
• • models/
• • controllers/
• - Example: REST API with Express.js

7. Advantages of Node.js
• - Fast execution with V8 engine
• - Handles concurrent requests efficiently
• - Full-stack JavaScript (frontend + backend)
• - Huge community and corporate support
• - Rich ecosystem of frameworks (Express,
Nest.js)

8. Conclusion
• - Node.js powers scalable, real-time
applications
• - Great for APIs, microservices, and streaming
apps
• - Future: Serverless Node.js, Edge computing
• Closing line: 'Node.js empowers developers to
build fast, scalable, and modern web apps.'