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Express.js Routing: Understanding Route Parameters
Express.js is a powerful and flexible web application framework for Node.js that allows you to easily create and manage routes in your application. One important concept in Express.js routing is route parameters. Route parameters are values that are passed in the URL and can be accessed in your application’s routes.
Let’s take a look at an example to better understand route parameters in Express.js:
const express = require('express');
const app = express();
// Route with a parameter
app.get('/users/:id', (req, res) => {
const userId = req.params.id;
res.send(`User ID: ${userId}`);
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
In the above example, we have defined a route ‘/users/:id’ that takes a parameter ‘id’. When a request is made to this route with a specific ID, the value of ‘id’ is accessed using ‘req.params.id’ and then sent back as a response. This allows you to dynamically handle requests based on the values passed in the URL.
Route parameters can be of any name and can be accessed in the same way as shown in the example above. You can also define multiple route parameters in a single route and access them in the same way.
Understanding route parameters in Express.js is essential for building dynamic and interactive web applications. It allows you to create flexible routes that can handle a wide range of requests based on the values passed in the URL. So, make sure to explore and experiment with route parameters in your Express.js applications.
Node JS Tutorials/Full Course in Hindi/Urdu #27
This article is part of the Node JS tutorials/full course in Hindi/Urdu series. In this series, you will learn everything you need to know about Node.js, including express.js routing, route parameters, middleware, and more. Stay tuned for more tutorials and courses on Node.js!
