使用javascript代码获取不是约束器错误

Question

不要购买Shopify.CountryProvinceSelector＆＃39;不是带有javacript代码的构造函数错误消息。创建对象可能有问题，但我无法弄清楚会发生什么？以下是我的代码

return _init = function() {
        new Shopify.CountryProvinceSelector("address_country", "address_province", {
            hideElement: "address_province_container"
        });
        var e = jQuery("#address_country"),
            t = jQuery("#address_province_label").get(0);
        "undefined" != typeof Countries && (Countries.updateProvinceLabel(e.val(), t), e.change(function() {
            Countries.updateProvinceLabel(e.val(), t)
        })), jQuery(".get-rates").click(function() {
            _disableButtons(), jQuery("#" + _config.wrapperId).empty().hide();
            var e = {};
            e.zip = jQuery("#address_zip").val() || "", e.country = jQuery("#address_country").val() || "", e.province = jQuery("#address_province").val() || "", _getCartShippingRatesForDestination(e)
        }), _config.customerIsLoggedIn && jQuery(".get-rates:eq(0)").trigger("click")
    },