Do you build things with AMP? Fill out the AMP Developer Survey!
AMP
  • websites

Payments in AMP

Introduction

Via amp-iframe and the allowpaymentrequest attribute, AMP pages can support requesting payment information directly from the browser. The PaymentRequest API is an open W3C spec with support from most major browsers. This example won't go into detail on the API, but you can get more information in this deep dive article.

This example shows how to embed an iframe that contains only a "buy now" button. All of the actual payment logic is contained within the iframe src itself.

Setup

The only extra component needed for this example is amp-iframe.

<script async custom-element="amp-iframe" src="https://cdn.ampproject.org/v0/amp-iframe-0.1.js"></script>

Configuring the Iframe

In the basic case, the AMP page hands off all PaymentRequest logic to the iframe to complete purchase of a single item.

Crtically, the iframe does two things:

  1. Sets the allowpaymentrequest attribute, which gives the iframe source permission to call PaymentRequest.show().
  2. Passes a relevant product identifier via query string, allowing the iframe to retrive appropriate product information for this product.
<amp-iframe title="Buy Now button to retrieve product information"
  width="130"
  height="42"
  sandbox="allow-scripts allow-same-origin allow-top-navigation"
  allowpaymentrequest
  frameborder="0"
  noloading
  src="https://amp-by-example-api.appspot.com/iframe/payments.html?productId=1">
  <button placeholder
    disabled>Buy Now</button>
</amp-iframe>

we add a placeholder element to the amp-iframe to ensure that it can be loaded in the top viewport. The placeholder shows a disabled button until the iframe is loaded. We also disable the default loading animation using CSS.

However, since AMP does not allow javascript, the iframe source must also handle the case where PaymentRequest is not available. While currently out of scope for this example, potential options are to:

  1. Swap the "Buy Now" button for an "Add to cart" button.
  2. Redirect to a standard checkout form.
  3. Hide the "Buy Now" button altogether, and have a separate AMP-based Add to Cart button (see the Product Page demo)
자세한 설명이 필요하신가요?

이 페이지의 설명만으로 궁금한 점이 모두 해결되지 않는다면 다른 AMP 사용자에게 문의하여 구체적인 활용 사례를 논의해 보세요.

Stack Overflow로 이동
설명이 부족한 기능을 발견하셨나요?

AMP 프로젝트는 여러분의 참여와 기여를 적극 환영합니다! 오픈 소스 커뮤니티를 통해 지속적으로 활동해 주셔도 좋지만 관심 있는 주제에 한 번만 기여하셔도 큰 도움이 됩니다.

GitHub에서 샘플 수정하기