Shell

<iframe
    allow="payment"
    src="COINFLOW_CHECKOUT_URL"
    onLoad={() => {
      window.addEventListener('message', event => {
        if (typeof event.data === 'string' ) {
          const data = JSON.parse(event.data);
          if (data.data === 'success') {
            console.log('payment id', data.info.paymentId)
          }
        }
      });
    }}
/>

Response Example

{"success":true}

Embed in iframe

Embed Coinflow checkout link in an iframe.

Listen for a postMessage event

Listen for a postMessage event from the checkout iframe and log the paymentId when a payment is successful.