Routing in Express

 Routing in Express: Routing in Express allows you to define how your application responds to client requests. It allows you to define a URL pattern and the corresponding function to execute when the pattern is matched. Here's an example of how to define a route in Express:

javascript

const express = require('express');

const app = express();

app.get('/users/:id', (req, res) => {

  const userId = req.params.id;

  res.send(`User ID: ${userId}`);

});

app.listen(3000, () => {

  console.log('Server listening on port 3000');

});