Bootstrap - Checkout Demo


Building the Checkout Form

Creating the Form Structure

To create the structure of the checkout form, you'll use Bootstrap's grid system to implement a two-column layout. This will help you organize the form fields in a clear and visually appealing way. Start by defining a container element and dividing it into two equal-width columns using the row and col classes.

Within each column, use Bootstrap's form-group class to group related form fields together. This helps in maintaining a structured and organized form layout. Add labels to each form field using the <label> element, providing clear instructions to the user about what information they need to enter.


<div class="container">
  <div class="row">
    <div class="col">
      <div class="form-group">
        <label for="name">Name</label>
        <input type="text" class="form-control" id="name" required>
    <div class="col">
      <div class="form-group">
        <label for="email">Email</label>
        <input type="email" class="form-control" id="email" required>

Next, add input fields for capturing personal information, such as name, email address, and phone number. Include fields for the shipping address, including street address, city, state, and zip code. For the payment details section, add input fields for the credit card number, expiration date, and CVV.

Styling the Form

To style the checkout form, use Bootstrap's pre-defined classes to ensure a consistent and visually appealing design. Apply classes like form-control to the input fields, which will give them a default styling that matches the overall Bootstrap theme.

To further customize the form's appearance, you can use Bootstrap's utility classes. These classes allow you to modify colors, spacing, and typography easily.


<label for="name" class="text-primary">Name</label>
<input type="text" class="form-control mb-3" id="name" required>

Make sure the form is responsive and looks good on different screen sizes. Bootstrap's grid system and responsive utility classes will help you achieve this. Use classes like col-md-6 to specify different column widths for different screen sizes, ensuring optimal layout on desktop and mobile devices.

Handling Form Validation

To handle form validation, leverage Bootstrap's built-in validation classes. Bootstrap provides classes like is-valid and is-invalid that you can apply to form fields to indicate their validation state.

Write JavaScript code to validate the form fields upon submission. For each field, check if the entered value meets the required criteria. If a field is valid, add the is-valid class to the corresponding input element. If a field is invalid, add the is-invalid class instead.

To display validation feedback, use Bootstrap's validation feedback elements. These are small text elements that appear below the form fields and provide feedback messages to the user. Use classes like valid-feedback and invalid-feedback to style these elements accordingly.


<div class="form-group">
  <label for="email">Email</label>
  <input type="email" class="form-control" id="email" required>
  <div class="valid-feedback">
    Looks good!
  <div class="invalid-feedback">
    Please enter a valid email address.


By combining Bootstrap's validation classes and custom validation logic, you'll create a robust and user-friendly form validation system that guides users in entering correct information and provides helpful feedback in case of errors.

Implementing the Order Summary

To give users a clear overview of their order, create a separate section that shows the order summary and total cost. This section will be updated dynamically based on the user's input in the checkout form.

Create a new section in your HTML markup to hold the order summary. Use Bootstrap's card component to structure the order summary in an organized and visually appealing way. The card component provides a flexible container that can include a header, body, and footer.


<div class="card">
  <div class="card-header">
    <h4>Order Summary</h4>
  <div class="card-body">
    <!-- Order summary content goes here -->
  <div class="card-footer">
    <p class="font-weight-bold">Total Cost: $<span id="total-cost">0.00</span></p>

Inside the card-body, display a list of the items or services the user has selected. Use Bootstrap's list-group component to create an organized list of items. Each item should include relevant details such as the item name, quantity, and price.

To make the order summary dynamic, use JavaScript to update the contents based on the user's input in the checkout form. Listen for changes in the form fields and update the corresponding elements in the order summary accordingly.


// Get the relevant form fields and order summary elements
const quantityInput = document.getElementById('quantity');
const itemPrice = document.getElementById('item-price');
const totalCost = document.getElementById('total-cost');

// Listen for changes in the quantity input field
quantityInput.addEventListener('change', updateOrderSummary);

function updateOrderSummary() {
  // Get the updated quantity and price
  const quantity = parseInt(quantityInput.value);
  const price = parseFloat(itemPrice.textContent);

  // Calculate the total cost
  const total = quantity * price;

  // Update the total cost in the order summary
  totalCost.textContent = total.toFixed(2);

You can extend this functionality to handle multiple items, apply discounts, or include additional fees based on your specific requirements. The key is to keep the order summary in sync with the user's input and provide real-time updates to reflect the current state of the order.

Integrating Payment Processing

To enable users to complete their purchases, you need to integrate a payment gateway into your checkout form. Payment gateways handle the processing of online payments, making sure that financial information is transmitted safely.

There are several payment gateway options available, each with its own features and pricing models. Two used payment gateways are Stripe and PayPal.

Stripe is a developer-friendly payment gateway that offers a set of APIs and tools for accepting online payments. It supports various payment methods, including credit cards, debit cards, and digital wallets like Apple Pay and Google Pay. Stripe provides documentation, making it easy to integrate into your checkout form.

PayPal is another payment gateway that allows users to make payments using their PayPal accounts or credit cards. It offers an interface and provides buyers with purchase protection, which can increase trust in your checkout process. PayPal also provides APIs and SDKs for integration into your website.

When choosing a payment gateway, consider factors such as transaction fees, supported payment methods, ease of integration, and the level of security provided. It's important to review the documentation and terms of service of the payment gateway you choose to make sure it aligns with your business requirements.

Once you've selected a payment gateway, you'll need to sign up for an account and get the necessary API credentials. This usually involves providing your business details, setting up a merchant account, and configuring your account settings.

To integrate the payment gateway into your checkout form, follow these steps:

Step Description
1 Include the payment gateway's JavaScript library or SDK in your project.
2 Configure your server-side code to handle the payment data and communicate with the payment gateway's API.
3 Add the form fields for collecting payment information, such as credit card number, expiration date, and CVV.
4 Add client-side validation to make sure the payment form is filled out correctly before submitting.
5 Use the payment gateway's API or SDK to tokenize the payment information and send it to your server for processing.
6 Handle the payment response from the payment gateway, displaying success or error messages to the user.
7 Update your database and order management system to reflect the payment status and fulfill the order.

Example: Integrating Stripe into Your Checkout Form

<form id="payment-form">
  <div id="card-element">
    <!-- Stripe Elements will be inserted here -->
  <button type="submit">Pay</button>
// Create a Stripe instance
const stripe = Stripe('YOUR_STRIPE_PUBLISHABLE_KEY');

// Create a Stripe Elements instance
const elements = stripe.elements();

// Create a card element and mount it to the card-element div
const card = elements.create('card');

// Handle form submission
const form = document.getElementById('payment-form');
form.addEventListener('submit', async (event) => {

  // Create a payment method using the card element
  const { paymentMethod, error } = await stripe.createPaymentMethod({
    type: 'card',
    card: card,

  if (error) {
    // Handle error
  } else {
    // Send the payment method ID to your server for processing
    const response = await fetch('/process-payment', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ payment_method_id: }),

    // Handle the server response
    if (response.ok) {
      // Payment succeeded
      alert('Payment successful!');
    } else {
      // Payment failed
      alert('Payment failed. Please try again.');

Remember to test your payment integration, handling different scenarios such as successful payments, declined payments, and error cases. Make sure that your integration follows the payment gateway's security requirements and best practices to protect payment data.

Testing and Deployment

Before deploying your checkout demo, you need to test it to make sure the checkout process works as expected. This includes testing different situations to identify and fix any issues.

Start by testing the basic flow of the checkout process. Fill out the checkout form with valid information and make sure the order summary updates correctly. Test submitting the form and check that the payment is processed successfully. Verify that you receive a confirmation message or are redirected to a success page.

Next, test various error situations. Some examples include:


- Submitting the form with missing or invalid information
- Entering an expired credit card or one with insufficient funds
- Simulating a network error or timeout during the payment processing
- Testing with different browsers and devices to check compatibility

For each situation, verify that the appropriate error messages are displayed and that the form validation works as intended. Make sure that you can recover from errors and try again without losing progress.

To automate some of the testing, you can use testing frameworks like Jest, Mocha, or Cypress. Write unit tests to verify individual components and functions, and write integration tests to check the flow of the checkout process from start to finish. Automated tests help catch problems and make sure your checkout demo stays functional as you make changes.

Once you're confident that your checkout demo is working correctly, you can deploy it to a web server or hosting platform. There are many options available, such as:


- Shared hosting providers like Bluehost, HostGator, or GoDaddy
- Cloud platforms like Amazon Web Services (AWS), Google Cloud Platform, or Microsoft Azure
- Static site hosting services like GitHub Pages, Netlify, or Vercel

Choose a hosting option that fits your needs and budget. Follow the provider's instructions to deploy your checkout demo. This usually involves uploading your files via FTP, using a version control system like Git, or using a deployment tool provided by the platform.

Before going live, test your deployed checkout demo again to make sure everything works as expected in the production environment. Verify that the payment processing is still functioning correctly and that there are no broken links or missing assets.

It's a good idea to set up monitoring and error logging for your deployed checkout demo. Use tools like Sentry, Bugsnag, or New Relic to get alerted when errors happen in production. This allows you to quickly identify and fix issues that may impact your experience.

Example: Deploying to GitHub Pages

1. Create a new repository on GitHub for your checkout demo.
2. Push your local code to the GitHub repository.
3. Go to the repository settings and scroll down to the "GitHub Pages" section.
4. Choose the branch you want to deploy (usually "main" or "master").
5. Select the root folder or the "docs" folder as the source.
6. Click "Save" to deploy your checkout demo.
7. GitHub will provide you with a URL where your demo is accessible.
8. Visit the URL and test your deployed checkout demo.

By testing your checkout demo and deploying it to a reliable hosting platform, you'll make sure that you have a smooth and error-free checkout experience. Monitoring and error logging help you maintain the quality of your checkout demo over time.