PayMill Form JQuery JS

paymill-form.js

$(function() {
    function paymillResponseHandler(error, result) {
        if (error) {
          $(".alert-danger").removeClass('hidden');
          $(".alert-danger").append('<p>' + error.apierror + '</p>');
          $("button.btn-success").removeAttr("disabled");
        } else {
          $("#id_token").val(result.token)
          $("form").get(0).submit();
        }
    }
 
    $("form").submit(function (event) {
        event.preventDefault();
        $('button.btn-success').attr("disabled", "disabled");
        var failed = false;
        var ccno = $('#id_card_no');
        var ccno_val = ccno.val().replace(/ /g,'');
        var exp = $('#id_expiry_date');
        var exp_val = exp.val().replace(/ /g,'').split('/');
        var exp_month = exp_val[0];
        var exp_year = '20' + exp_val[1];        
        var cvc = $('#id_cvc');
        var cvc_val = cvc.val().replace(/ /g,'');
        if (false == paymill.validateCardNumber(ccno_val)) {
            ccno.parent().parent().addClass('field-error');
            failed=true;
        }
        else {
            ccno.parent().parent().removeClass('field-error');            
        }
        if (false == paymill.validateExpiry(exp_month, exp_year)) {
            exp.parent().parent().addClass('field-error');
            failed=true;
        }
        else {
            exp.parent().parent().removeClass('field-error');            
        }
        var params = {
            amount_int: 1*100,
            currency: 'EUR',
            number: ccno_val,
            exp_month: exp_month,
            exp_year: exp_year,
            cvc: cvc_val
        };
 
        if (failed) {
            $("button.btn-success").removeAttr("disabled");
        }
        else {
            paymill.createToken(params, paymillResponseHandler);
        }
    });    
})