Hi all,

I'm receiving the following error when using AcceptUI (hosted mode):

Uncaught TypeError: window[s] is not a function
    at _sendRespondBackToMerchant (AcceptUI.js:1)
    at U (AcceptUI.js:1)

When you prettify the minified JS source (https://jstest.authorize.net/v3/AcceptUI.js), you'll see that the code tries to find out if the responseHandler is a function or not:

"function"==typeof s?s.call(null,t):window[s](t)

Unfortunately, the responseHandler is set as a data-attribute (data-responseHandler) on the initiating button.

Example:

<form id="paymentForm"
    method="POST"
    action="https://YourServer/PathToExistingPaymentProcessingScript">
    <input type="hidden" name="dataValue" id="dataValue" />
    <input type="hidden" name="dataDescriptor" id="dataDescriptor" />
    <button type="button"
        class="AcceptUI"
        data-billingAddressOptions='{"show":true, "required":false}' 
        data-apiLoginID="YOUR API LOGIN ID" 
        data-clientKey="YOUR PUBLIC CLIENT KEY"
        data-acceptUIFormBtnTxt="Submit" 
        data-acceptUIFormHeaderTxt="Card Information" 
        data-responseHandler="responseHandler">Pay
    </button>
</form>

When set using the example, the code breaks when the AcceptUI library tries to determine if it's a function or not. It always turns out as a string. FYI: The responseHandler value (regardless if set inline or by JavaScript) returns as a string no matter what in my testing:

element.setAttribute("data-responseHandler", function() { console.log('Hello World'); });

Will still return as "string" when using typeof.

Is this a bug in the AcceptUI code or is there a workaround?