Key Features
Routing System
Define routes for HTTP methods and URLs with clean, modular structure.
Middleware Support
Use built-in or custom middleware for logging, authentication, parsing, and more.
RESTful APIs
Quickly build scalable APIs with JSON responses and route handlers.
Template Engines
Render dynamic HTML using Pug, EJS, Handlebars, and other engines.
How It Works
Install Express
Run `npm install express` in your Node.js project directory.
Create Server
Use Express to define routes and start an HTTP server.
Add Middleware
Integrate middleware for parsing, logging, error handling, and security.
Define Routes
Set up GET, POST, PUT, DELETE endpoints for your API or app.
Deploy & Monitor
Deploy to cloud or container platforms and monitor with logging tools.
Code Example
// Sample Express.js server
const express = require('express');
const app = express();
app.get('/', (req, res) => {
res.send('Hello from Express.js!');
});
app.listen(3000, () => {
console.log('Server running on http://localhost:3000');
});Use Cases
RESTful API Development
Build scalable APIs for web and mobile apps with clean routing.
Web Applications
Serve dynamic pages using template engines and session management.
Microservices
Create modular services with Express and deploy independently.
Middleware Integration
Add logging, authentication, and error handling with custom middleware.
Integrations & Resources
Explore Express.js’s ecosystem and find the tools, platforms, and docs to accelerate your workflow.
Popular Integrations
- Node.js, MongoDB, PostgreSQL
- JWT, Passport.js, OAuth
- Docker, Kubernetes
- GitHub, GitLab, Bitbucket
- Jenkins, Travis CI, PM2
Helpful Resources
FAQ
Common questions about Express.js’s capabilities, usage, and ecosystem.