Express JS Tutorial for Beginners in Hindi 2024

Express JS is a popular web application framework for Node.js. It provides a simple and flexible way to build web applications and APIs. In this tutorial, we will cover the basics of Express JS and learn how to create a simple login and logout system using Express.

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Introduction to Express JS

Express JS is a minimalist web framework for Node.js that provides a robust set of features for web and mobile applications. It allows you to quickly set up routes, handle requests and responses, and integrate with other Node.js modules.

Setting up Express JS

To get started with Express JS, first, you need to install Node.js on your system. You can download the latest version of Node.js from the official website. Once you have Node.js installed, you can create a new Express JS project by running the following command in your terminal:

npm install express

Creating a Simple Express App

Now that you have installed Express JS, you can create a new Express app by creating a new JavaScript file and requiring the Express module:

const express = require('express');

You can then create a new Express app by calling express() and setting up a route for the home page:

const app = express();

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

You can then start your Express app by listening on a port:

app.listen(3000, () => {
console.log('Express app listening on port 3000');
});

Creating a Login & Logout System

Now that you have a basic Express app set up, you can create a simple login and logout system by setting up routes for the login and logout pages:

app.get('/login', (req, res) => {
res.send('Login page');
});

app.get('/logout', (req, res) => {
res.send('Logout page');
});

You can then add a form to the login page to handle user authentication and a button to the logout page to log the user out.

Conclusion

Congratulations! You have successfully created a simple Express app with a login and logout system. This is just the beginning of what you can do with Express JS. There are many more features and functionalities that you can explore to build powerful web applications and APIs using Express.