Node.js Express Documentation

Welcome to the Node.js Express documentation page. Express is a web application framework for Node.js, providing a robust set of features for web and mobile applications. Below you will find a summary of the key features and some helpful links to dive deeper into the documentation.

Key Features

• Rapid Development: Build fast and robust applications with minimal overhead.
• Middleware Driven: Use middleware to separate concerns and enhance functionality.
• Extensibility: Extend Express with a wide range of middleware.
• Simplicity: A simple, yet powerful API for creating web applications.

Getting Started

If you're new to Express, we recommend starting with the Getting Started Guide. This guide will walk you through setting up your first Express application.

Middleware

Express uses middleware to separate concerns and add functionality. Middleware are functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle.

Here's a simple example of a middleware function:

app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  next();
});

Routing

Express has a powerful routing engine that allows you to define routes for different HTTP methods and paths.

app.get('/', function(req, res) {
  res.send('Hello World!');
});

app.post('/data', function(req, res) {
  // Handle POST requests to /data
});

Template Engines

Express can be used with various template engines to render views and send them to the client.

app.set('view engine', 'ejs');

Deployment

Once you have developed your application, it's time to deploy it. We recommend checking out the Deployment Guide for tips on how to get your application running in production.

Express Logo

For more information, visit the official Express documentation.

If you have any questions or need further assistance, feel free to reach out to our community forums at community forums link. We're here to help!