Форум

<!-- Кнопка купить в кредит -->
<div class="row columnRow">
    <?
    global $USER;
    $rsUser = CUser::GetByID($USER->GetParam('USER_ID'));
    $arUser = $rsUser->Fetch();
    ?>
    <sc ript>
        var price = parseInt(<?=$arResult[PRICE][DISCOUNT_PRICE]?>);
        //Создаем событие change через делегирование и пишем в name="sum"
        $(document)
            .on('change', '[data-max-quantity]', function(){
                $('[name="sum"]').val(parseInt($(this).val()) * price);
                $('[name="itemQuantity_0"]').val($(this).val());
            });
        // Вылавливаем нажатие на минус и записываем текущее значение в inpute
        $('body').on('click', '.qtyBlock .minus', function(e) {
            var input = $(this).parents('.qtyBlock').find('input').val();
            $('[name="sum"]').val(parseInt(input) * price);
            $('[name="itemQuantity_0"]').val(input);
        })
        // Вылавливаем нажатие на плюс и записываем текущее значение в inpute
        $('body').on('click', '.qtyBlock .plus', function(e) {
            var input = $(this).parents('.qtyBlock').find('input').val();
            $('[name="sum"]').val(parseInt(input) * price);
            $('[name="itemQuantity_0"]').val(input);
        })
    </sc ript>
    <fo rm action="https://loans-qa.tcsbank.ru/api/partners/v1/lightweight/create" method="post">
        <input name="shopId" value="test_online" type="hidden"/>
        <input name="showcaseId" value="test_online" type="hidden"/>
        <input name="promoCode" value="default" type="hidden"/>
        <input name="sum" value="<?=$arResult[PRICE][DISCOUNT_PRICE];?>" type="hidden">
        <input name="itemName_0" value="<?=$arResult["NAME"];?>" type="hidden"/>
        <input name="itemQuantity_0" value="<?=$arResult[PRICE][COUNT_PRICES]?>" type="hidden"/>
        <input name="itemPrice_0" value="<?=$arResult[PRICE][RESULT_PRICE][BASE_PRICE];?>" type="hidden"/>
        <input name="itemCategory_0" value="<?=$arResult[LAST_SECTION][NAME];?>" type="hidden"/>
        <input name="customerEmail" value="<?=$arUser[EMAIL]?>" type="hidden"/>
        <input name="customerPhone" value="<?=$arUser[PERSONAL_MOBILE]?>" type="hidden"/>
        <?if(!empty($arResult["PRICE"])):?>
            <?if($arResult["CATALOG_AVAILABLE"] != "Y"):?>
            <?else:?>
                <input type="submit" class="btn-simple-credit btn-medium-credit btn-border-credit changeID changeQty changeCart" value="Купи в кредит" data-id="<?=$arResult["ID"]?>" data-quantity="<?=$arResult["EXTRA_SETTINGS"]["BASKET_STEP"]?>"/>
            <?endif;?>
        <?else:?>
        <?endif;?>
    </form>
</div>
</div>
</div>
<div class="secondTool">
    <div class="qtyBlock row">
        <img src="<?=SITE_TEMPLATE_PATH?>/images/qty.png" alt="" class="icon">
        <label class="label"><?=GetMessage("QUANTITY_LABEL")?> </label>
        <a href="#" class="minus"></a>
        <input type="text" class="qty"<?if(!empty($arResult["PRICE"]["EXTENDED_PRICES"])):?> data-extended-price='<?=\Bitrix\Main\Web\Json::encode($arResult["PRICE"]["EXTENDED_PRICES"])?>'<?endif;?> value="<?=$arResult["EXTRA_SETTINGS"]["BASKET_STEP"]?>" data-step="<?=$arResult["EXTRA_SETTINGS"]["BASKET_STEP"]?>" data-max-quantity="<?=$arResult["CATALOG_QUANTITY"]?>" data-enable-trace="<?=(($arResult["CATALOG_QUANTITY_TRACE"] == "Y" && $arResult["CATALOG_CAN_BUY_ZERO"] == "N") ? "Y" : "N")?>">
        <a href="#" class="plus"></a>
    </div>
</div>

var addCartPlus = function(event){

        var $qtyBox = $("#catalogElement .secondTool .qtyBlock .qty");
        var $addCartBtn = $("#catalogElement .addCart.changeQty");

        var xCurrentQtyValue = Number($qtyBox.val());
        var xQtyStep = Number($qtyBox.data("step"));
        var xQtyExpression = Number((xCurrentQtyValue * 10 + xQtyStep * 10) / 10); //js magic .9999999

        var _enableTrace = $qtyBox.data("enable-trace");
        var _maxQuantity = Number($qtyBox.data("max-quantity"));

        var __qtyError = false;
        var xTmpExpression = 0;

        if(_enableTrace == "Y"){

            xTmpExpression = xQtyExpression;
            xQtyExpression = (xQtyExpression > _maxQuantity) ? _maxQuantity : xQtyExpression;

            if(xTmpExpression != xQtyExpression){
                __qtyError = true;
            }

        }

        $qtyBox.val(xQtyExpression);
        $addCartBtn.data("quantity", xQtyExpression);

        //extented prices
        reCalcPrice($qtyBox, xQtyExpression);

        //set or remove error
        __qtyError === true ? $qtyBox.addClass("error") : $qtyBox.removeClass("error");

        var input = $(this).parents('.qtyBlock').find('input').val();
        $('[name="sum"]').val(parseInt(input) * price);
        $('[name="itemQuantity_0"]').val(input);

        return event.preventDefault();

    };

    var addCartMinus = function(event){

        var $qtyBox = $("#catalogElement .secondTool .qtyBlock .qty");
        var $addCartBtn = $("#catalogElement .addCart.changeQty");

        var xCurrentQtyValue = Number($qtyBox.val());
        var xQtyStep = Number($qtyBox.data("step"));
        var xQtyExpression = Number((xCurrentQtyValue * 10 - xQtyStep * 10) / 10); //js magic .9999999

        var _enableTrace = $qtyBox.data("enable-trace");
        var _maxQuantity = Number($qtyBox.data("max-quantity"));

        var __qtyError = false;
        var xTmpExpression = 0;

        xQtyExpression = xQtyExpression > xQtyStep ? xQtyExpression : xQtyStep;

        if(_enableTrace == "Y"){

            xTmpExpression = xQtyExpression;
            xQtyExpression = (xQtyExpression > _maxQuantity) ? _maxQuantity : xQtyExpression;

            if(xTmpExpression != xQtyExpression){
                __qtyError = true;
            }

        }

        $qtyBox.val(xQtyExpression);
        $addCartBtn.data("quantity", xQtyExpression);

        //extented prices
        reCalcPrice($qtyBox, xQtyExpression);

        //set or remove error
        __qtyError === true ? $qtyBox.addClass("error") : $qtyBox.removeClass("error");

        var input = $(this).parents('.qtyBlock').find('input').val();
        $('[name="sum"]').val(parseInt(input) * price);
        $('[name="itemQuantity_0"]').val(input);

        return event.preventDefault();

    };