frankyenshaw/JavaScriptButtons: JavaScript for creating dynamic buttons that enable PayPal checkout · GitHub

PayPal HTML payment buttons that are as easy as including a snippet of code. Try it out and configure your own.

We have a few flavors of buttons for you to use:

Buy Now buttons are for single item purchases.

<script src="paypal-button.min.js?merchant=YOUR_MERCHANT_ID"
    data-button="buynow"
    data-name="My product"
    data-amount="1.00"
></script>

Add To Cart buttons let users add multiple items to their PayPal cart.

<script src="paypal-button-minicart.min.js?merchant=YOUR_MERCHANT_ID"
    data-button="cart"
    data-name="Product in your cart"
    data-amount="1.00"
></script>

QR codes can be easily scanned with a smart phone to check out.

<script src="paypal-button.min.js?merchant=YOUR_MERCHANT_ID"
    data-button="qr"
    data-name="Product via QR code"
    data-amount="1.00"
></script>

Donation buttons let you accept donations from your users.

<script src="paypal-button.min.js?merchant=YOUR_MERCHANT_ID"
    data-button="donate"
    data-name="My donation"
    data-amount="1.00"
></script>

Subscribe buttons let you set up payment subscriptions.

<script src="paypal-button.min.js?merchant=YOUR_MERCHANT_ID"
    data-button="subscribe"
    data-name="My product"
    data-amount="1.00"
    data-recurrence="1"
    data-period="M"
></script>

All of PayPal's HTML button variables are supported by prefixing their name with "data-". Here are the most commonly used:

• data-name Description of the item.
• data-number The number of the item.
• data-amount The price of the item.
• data-currency The currency of the item (note: these cannot be mixed).
• data-quantity Quantity of items to purchase.
• data-shipping The cost of shipping this item.
• data-tax Transaction-based tax override variable.
• data-size For button images: small and large work. For QR codes enter the pixel length of the longest side.
• data-locale The desired locale of the PayPal site.
• data-callback The IPN notify URL to be called on completion of the transaction.
• data-env The PayPal environment to checkout in, e.g. sandbox (defaults to 'www')

Creating editable fields is easy! Just add -editable to the name of your variable, e.g. data-quantity-editable, and an input field will magically appear for your users.

On completion of a transaction you can get a payment notification (IPN) on a callback URL you specify using the data-callback attribute. An IPN simulator is available on the sandbox.

• Changing the default language of a button can be done by setting the variable data-lc with the correct locale code, e.g. es_ES.
• Changing the default input labels of editable buttons can be done by overriding the default configuration, e.g. PAYPAL.apps.ButtonFactory.config.labels.

There's even a fancy JavaScript API if you'd like to pragmatically create your buttons.

PAYPAL.apps.ButtonFactory.config
This can be overridden to change the default behavior of the buttons.

PAYPAL.apps.ButtonFactory.create(business, data, type, parentNode)
Creates and returns an HTML element that contains the button code.

business - A string containing either the business ID or the business email
data - A JavaScript object containing the button variables
type - The button type, e.g. "buynow", "cart", "qr"
parentNode - An HTML element to add the newly created button to (Optional)

To download the production-ready JavaScript you'll need to save one of these files:

• JavaScript Buttons
• JavaScript Buttons + MiniCart

The first file gives you support for PayPal's JavaScript buttons. The second file has the same code from the first, but also contains functionality for the PayPal Mini Cart.

To see the un-minified code you can take a peek at paypal-button.js.

The JavaScript buttons have been tested and work in all modern browsers including:

• Chrome
• Safari
• Firefox
• Internet Explorer 7+.

Your merchant ID needs to be added to the URL of the referenced script. This ID can either be your Secure Merchant ID, which can be found by logging into your PayPal account and visiting your profile, or your email address.

We love contributions! If you'd like to contribute please submit a pull request via Github.

Mocha is used to run our test cases. Please be sure to run these prior to your pull request and ensure nothing is broken.

Jeff Harrell
https://github.com/jeffharrell

Mark Stuart
https://github.com/mstuart