How does routing work in Node.js with Express?

How does routing work in Node.js with Express?

Routing in Node.js with Express allows you to define endpoints for your application. You can specify different HTTP methods and paths to handle requests.

Can you show me a simple example of defining a route?

Sure! Here's a basic example:

const express = require('express');
const app = express();

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

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

What if I want to handle POST requests?

You can use app.post() to handle POST requests. For example:

app.post('/submit', (req, res) => {
    // Handle form submission
    res.send('Form submitted!');
});

How can I handle route parameters?

You can define route parameters using a colon. For example:

app.get('/user/:id', (req, res) => {
    const userId = req.params.id;
    res.send(`User ID is ${userId}`);
});