Introduction to Stripe Payments in Node.js Using Express

Sure, I'd be happy to provide you with an introduction to integrating Stripe Payments in a Node.js application using Express. Stripe is a popular payment processing platform that allows businesses to accept online payments. Here's a step-by-step guide to get you started:

  1. Set up a Stripe Account

    First, you need to create a Stripe account if you don't have one already. Visit the Stripe website and sign up.

  2. Install Dependencies

    Create a new Node.js project and install the necessary packages:

                        npm init -y
                        npm install express stripe dotenv                    

  3. Obtain API Keys

    After setting up your Stripe account, obtain your API keys from the Stripe Dashboard.

    You will have both a Publishable Key and a Secret Key. Keep them secure, especially the secret key.

  4. Set up Environment Variables

    Create a .env file in your project root and add your Stripe API keys:


  5. Create an Express Server

    Create a file (e.g.,app.js) for your Express server:

                        const express = require('express');
                        const app = express();
                        const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
                        app.use(express.urlencoded({ extended: true }));
                        app.set('view engine', 'ejs');
                        app.get('/', (req, res) => {
                          res.render('index', { stripePublicKey: process.env.STRIPE_PUBLIC_KEY });
              '/purchase', async (req, res) => {
                          // Retrieve payment intent from the client
                          const { paymentIntentId } = req.body;
                          try {
                            // Confirm the payment intent on the server
                            const paymentIntent = await stripe.paymentIntents.confirm(paymentIntentId);
                            res.json({ clientSecret: paymentIntent.client_secret });
                          } catch (error) {
                            res.status(500).json({ error: 'Unable to confirm payment intent' });
                        const PORT = process.env.PORT || 3000;
                        app.listen(PORT, () => {
                          console.log(`Server is running on port ${PORT}`);

  6. Create Frontend (index.ejs)

    Create a folder called views in your project and add a file named index.ejs:

                      <!DOCTYPE html>
                      <html lang="en">
                        <meta charset="UTF-8">
                        <meta name="viewport" content="width=device-width, initial-scale=1.0">
                        <title>Stripe Payments</title>
                        <script src=""></script>
                        <h1>Stripe Payments with Node.js and Express</h1>
                        <form id="payment-form">
                          <!-- A Stripe Element will be inserted here. -->
                          <div id="card-element"></div>
                          <!-- Used to display form errors. -->
                          <div id="card-errors" role="alert"></div>
                          <button type="button" id="submit">Pay</button>
                          // Set your publishable key
                          const stripe = Stripe('<%= stripePublicKey %>');
                          // Create an instance of Elements
                          const elements = stripe.elements();
                          // Create an instance of the card Element
                          const card = elements.create('card');
                          // Add an instance of the card Element into the `card-element` div
                          // Handle real-time validation errors from the card Element
                          card.addEventListener('change', ({ error }) => {
                            const displayError = document.getElementById('card-errors');
                            if (error) {
                              displayError.textContent = error.message;
                            } else {
                              displayError.textContent = '';
                          // Handle form submission
                          const form = document.getElementById('payment-form');
                          form.addEventListener('submit', async (event) => {
                            const { token, error } = await stripe.createToken(card);
                            if (error) {
                              // Inform the user if there was an error
                              const errorElement = document.getElementById('card-errors');
                              errorElement.textContent = error.message;
                            } else {
                              // Send the token to your server
                              fetch('/purchase', {
                                method: 'POST',
                                headers: {
                                  'Content-Type': 'application/json',
                                body: JSON.stringify({ paymentIntentId: }),
                              .then(response => response.json())
                              .then(({ clientSecret }) => {
                                // Call confirmCardPayment when submitting the form
                                stripe.confirmCardPayment(clientSecret, {
                                  payment_method: {
                                    card: card,

  7. Start the Server

    Run your Node.js server:

                        node app.js

    Visit http://localhost:3000 in your browser to see the payment form.

This is a basic example to help you get started. For a production environment, you should handle more aspects such as error handling, security, and proper server-side confirmation.

Remember to refer to the official Stripe documentation for more details and advanced configurations.

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