Chapa Inline.js

This JavaScript module/wrapper provides an easy way to integrate Chapa’s direct charges into your web application. The ChapaCheckout class dynamically renders the payment form, handles user interactions, and processes payments through Chapa’s API.

You can find the Chapa Inline JS package here.

Features

• Dynamic Payment Form: Renders a customizable payment form, including phone number input and payment method selection.
• Payment Methods: Supports multiple payment methods, including Telebirr, CBE Birr, Ebirr, Mpesa, and others via Chapa.
• Mobile Number Validation: Validates Ethiopian phone numbers for the selected payment method. It automatically strips common prefixes like 0, 251, or +251 for accurate validation.
• Customizable Styles: Easily apply custom styles to match your application’s design, including customizable button text.
• Callback and Return URLs: Supports custom callback and return URLs for handling payment results.
• Success and Failure Callbacks: Allows you to define custom behaviors upon successful payment or payment failure.
• Popup Handling: Displays a customizable popup upon successful payment, with the option to trigger additional actions when the popup is closed.
• Pre-filled Phone Numbers: Option to prefill phone numbers in the payment form.
• Show/Hide Payment Method Names: Control whether the names of payment methods are displayed alongside their icons.

Getting Started

Option 1: Using the Hosted Script

You can include the Chapa inline.js directly in your HTML by loading it from Chapa’s CDN:

<script src="https://js.chapa.co/v1/inline.js"></script>

Option 2: Installing via npm

If you prefer to manage dependencies through npm, you can install the Chapa inline script as a package:

npm install @chapa_et/inline.js

Then, you can import and use it in your JavaScript file:

import ChapaCheckout from '@chapa_et/inline.js';
 
const chapa = new ChapaCheckout({
    publicKey: 'YOUR_PUBLIC_KEY_HERE',
    amount: '100',
    currency: 'ETB',
    availablePaymentMethods: ['telebirr', 'cbebirr', 'ebirr', 'mpesa', 'chapa'],
    customizations: {
        buttonText: 'Pay Now',
        styles: `
            .chapa-pay-button { 
                background-color: #4CAF50; 
                color: white;
            }
        `
    },
    callbackUrl: 'https://yourdomain.com/callback',
    returnUrl: 'https://yourdomain.com/success',
});
 
chapa.initialize('chapa-inline-form');

Usage

1. Create an HTML Container:

   In your HTML file, create a container where the payment form will be rendered:

   <div id="chapa-inline-form"></div>

2. Initialize ChapaCheckout:

   Create a new instance of the ChapaCheckout class and pass in your configuration options:

   const chapa = new ChapaCheckout({
       publicKey: 'YOUR_PUBLIC_KEY_HERE',
       amount: '100',
       currency: 'ETB',
       availablePaymentMethods: ['telebirr', 'cbebirr', 'ebirr', 'mpesa', 'chapa'],
       customizations: {
           buttonText: 'Pay Now',
           styles: `
               .chapa-pay-button { 
                   background-color: #4CAF50; 
                   color: white;
               }
           `
       },
       callbackUrl: 'https://yourdomain.com/callback',
       returnUrl: 'https://yourdomain.com/success',
   });
    
   chapa.initialize('chapa-inline-form');

3. Handle Payment Submission:

   The payment process is triggered when the user clicks the “Pay Now” button. The ChapaCheckout class will handle the payment process, including validation and API requests.

Examples

To help you get started quickly, the following example implementations are provided in the examples/ folder:

1. Checkout Example - examples/checkout.html

This example demonstrates a simple e-commerce checkout integration using Chapa’s inline payment gateway. It includes a basic order summary with a pre-filled phone number.

• File Location: examples/checkout.html
• Features:
  • Pre-configured order summary.
  • Pre-filled phone number in the payment form.
  • Easy integration with minimal configuration.

2. Custom Example - examples/custom.html

This example demonstrates how to create a custom payment form using the ChapaCheckout class. You can customize the button text, styles, and payment methods.

• File Location: examples/custom.html
• Features:
  • Customizable button text and styles.
  • Manual payment initiation.
  • Custom callback and return URLs.

Running the Examples

To view the examples, simply open the HTML files in your web browser:

• Custom Example: Open examples/custom.html in your browser.
• Checkout Example: Open examples/checkout.html in your browser.

Configuration Options

• publicKey: Your Chapa public key (required).
• amount: The amount to be paid (required).
• currency: The currency for the transaction (default: ETB).
• availablePaymentMethods: An array of available payment methods (default: ['telebirr', 'cbebirr', 'ebirr', 'mpesa']).
• customizations: An object containing custom styles and button text.
  • buttonText: The text displayed on the payment button.
  • styles: Custom CSS styles to apply to the payment form.
• callbackUrl: The URL to which Chapa will send the transaction results.
• returnUrl: The URL to which the user will be redirected after the payment is completed.
• showFlag: Boolean to determine if the country flag should be shown (default: true).
• showPaymentMethodsNames: Boolean to determine if payment method names should be displayed (default: true).
• onSuccessfulPayment: A callback function that is executed upon successful payment.
• customizations.successMessage: A custom message to show on successful payment.
• onPaymentFailure: A callback function that is executed if the payment fails.
• onClose: A callback function that is executed when the payment popup is closed.