Click to Pay
    
    isEnrollmentAvailableForCardPrefix()
isEnrollmentAvailableForCardPrefix()
Use this function if your application collects the card details from the payer.
Once the payer has entered the card number, your application should call this function to determine if you can offer the payer to enroll the card in Click to Pay.
If the function returns true you must display the Click to Pay logo and terms and conditions.
Usage
ClickToPay.isEnrollmentAvailableForCardPrefix(tenDigitCardPrefix, callback);
Example
ClickToPay.isEnrollmentAvailableForCardPrefix('5123456789', function (canEnroll) {
  console.log('Card can be enrolled', canEnroll)
});
  
Arguments
        tenDigitCardPrefix
        
        String
        REQUIRED
    The first 10 digits of the card entered by the payer.
        
        callback
        
        Function
        REQUIRED
    Callback function to return the response.
        canEnroll
        
        Boolean
        REQUIRED
    Indicates if you can offer the payer to enroll the card in Click to Pay. If the value true is returned you can offer Click to Pay as a checkout option to the payer, otherwise you cannot.
Return Value
None