Express.js Basics
Routing, middleware, requests/responses, static files, template engines, error handling
1What is Express.js?
What is Express.js?
Risposta
Express.js is a minimal and flexible web framework for Node.js that provides robust features for building web applications and APIs. It simplifies routing, middleware, and HTTP request/response handling compared to vanilla Node.js. Express has become the de facto standard for Node.js web applications due to its simplicity and performance.
2How to create a basic Express application?
How to create a basic Express application?
Risposta
Creating an Express application requires importing the express module then calling the express() function to instantiate the application. This instance provides all necessary methods to define routes, middlewares and start the server. This is the first step of any Express application.
3Which method defines a GET route in Express?
Which method defines a GET route in Express?
Risposta
The app.get() method is used to define a route that responds to HTTP GET requests. It takes two parameters: the route path and a callback function that processes the request and sends the response. This method is fundamental for creating REST endpoints.
What is a middleware in Express?
How to add a global middleware in Express?
+17 domande da colloquio
Altri argomenti di colloquio Node.js / NestJS
Node.js Fundamentals
Node.js Core APIs
Asynchronous Programming
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REST API Design
Validation & DTO
API Documentation & Contracts
Error Handling
Unit Testing
Task Scheduling
NestJS Modules & DI
Configuration & Environment Management
JWT Authentication
Authorization & RBAC
Database with TypeORM
Prisma ORM
Middleware & Interceptors
File Upload
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End-to-End Testing
Caching with Redis
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Microservices
Security Best Practices
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