History: API Tracker Update Demo

$(".stockAdmin.minus, .stockAdmin.plus")
    .css("cursor", "pointer")
    .on(
        "click",
        function () {
            let itemId = location.href.match(/itemId=(\d+)/);
            if (itemId) {
                itemId = itemId[1];
            } else {
                alert("No product id found");
                return;
            }
            const $stockAdmin = $(".stockAdmin.number");
            $stockAdmin.tikiModal(" ");
            let stock = $stockAdmin.text();
            if ($(this).hasClass("minus")) {
                stock--;
            } else {
                stock++;
            }
            $.ajax(
                $.service("tracker", "update_item"),
                {
                    type: 'POST',
                    dataType: 'json',
                    data: {
                        fields: {
                            productsStock: stock
                        },
                        itemId: itemId,
                        trackerId: 1
                    },
                    success: function (data) {
                        if (!data) {
                            alert("Oops, something went wrong, sorry");
                        } else {
                            $stockAdmin.text(stock);
                        }
                        $(".stockAdmin.number").tikiModal();
                    }
                }
            );
            return false;
        })