How to pre-populate email in the Stripe payments dialog popup

Question

I cannot seem to find a way to pre-populate the email address in the stripe payment popup. However this weekend I signed up for two accounts on websites that use stripe payments and I realized those websites had my email pre-populated in the stripe dialog iframe box. So I know there must be a way but I am unsure of how to do that. The docs don't define that property. Can someone explain how this is done using the javascript API and the basic Stripe dialog?

Answer 1

If you're using Simple Checkout you pass the email in data-email like this:

<form action="/charge" method="POST">   <script     src="https://checkout.stripe.com/checkout.js" class="stripe-button"     data-key="pk_test_6pRNASCoBOKtIshFeQd4XMUh"     data-image="/img/documentation/checkout/marketplace.png"     data-name="Stripe.com"     data-description="2 widgets"     data-amount="2000"     data-email="[email protected]"     data-locale="auto">   </script> </form> 

If you're using Custom Checkout you pass the email in the email parameter to handler.open():

handler.open({   name: 'Stripe.com',   description: '2 widgets',   amount: 2000,   email: "[email protected]" });