Basic QuickDonate setup.

email.txt

(this will prepopulate the email and amount fields.)

http://yourdomain.com/yourpage?oneid-donate-email=<USER_EMAIL>&oneid-donate-amount=<DONATION_AMOUNT>&oneid-autorun=true

qd.html

<script src="//api.oneid.com/js/oneid.js"></script>
<script>
// your QuickDonate implementation
var quickdonate = function() {
  OneID.donate(function(response) {
    if(response) {
      // completed successfully. you'll have access to response.result.order here, which
      // includes the users email and all personal info they input except for their CC info
    } else {
      // user cancelled
    }
  });
};

OneID.config({
  // Merchant ID which you get from merchant.oneid.com
  merchant_id: "MERCHANT-ID-HERE",
  // if you include oneid-autorun=true in the URL vars, 
  // this function will be called when page loads
  autorun: quickdonate
});

// when element is clicked, launch OneID QuickDonate
$(".quickdonate").on("click", quickdonate);

// you can also call your quickdonate on page load if a URL arg is set,
// if they land on a certain page... whatever.
</script>