carousel without reload page soda

<script>
    (function() {
/* cart counter different on mb and dt */
//dt
        var cartCounter = document.querySelector('div.header-action-area.d-none p.v2-cart-counter');
//mb
var cartCounter = document.querySelector('div.header-mobile a.header-cart p');

        function adoricAddToCart(productId, addToCartButton) {
            /* add this ti add to cart function */
            addToCartButton.style.backgroundColor = 'rgb(255, 255, 255)';
            addToCartButton.style.border = '1px solid rgb(0, 158, 226)';
            addToCartButton.style.color = '#00adee';
            addToCartButton.textContent = 'Added to cart';
            addToCartButton.style.outline = 'none';
            setTimeout(() => {
                addToCartButton.style.backgroundColor = 'rgb(0, 158, 226)';
                addToCartButton.style.color = 'rgb(255, 255, 255)';
            }, 1500);

            window.adoricAddToCart = data;
                        /*--------------*/


            xhr.addEventListener('readystatechange', function() {
                if (this.readyState === 4) {
                    /* add here counting in the cart instead of reload */
                    cartCounter.textContent = parseInt(cartCounter.textContent) + 1;
                    if (cartCounter.classList.contains('d-none')) {
                        cartCounter.classList.remove('d-none');
                    }
                    /*---------------*/
                }
            });
        }

        currentCampaignRepeater.addEventListener('click', function(event) {
            if (event.target.getAttribute('role') === 'button' && productItem) {
                /* here add an addToCartButton value and add it to adoricAddToCart function. Don't forget to
                add the second argument into function */

                var addToCartButton = event.target;
                adoricAddToCart(productId, addToCartButton);
            }
        });

        /* add this event listener on close campaign*/
        adoric.on('lightbox:before:close', function(e) {
            if (e.lightbox.options.campaignId === self.campaignId) {
                if (window.adoricAddToCart) {
                    window.location.reload();
                }
            }
        });
    })();

    /* and add to the button link keep opened */
</script>