https://motistore.com/js/public.countryselect.js

1/*
2** nopCommerce country select js functions
3*/
4+function ($) {
5    'use strict';
6    if ('undefined' == typeof (jQuery)) {
7        throw new Error('jQuery JS required');
8    }
9    function countrySelectHandler() {
10        var $this = $(this);
11        var selectedItem = $this.val();
12        var stateProvince = $($this.data('stateprovince'));
13        var loading = $($this.data('loading'));
14        loading.show();
15        $.ajax({
16            cache: false,
17            type: "GET",
18            url: $this.data('url'),
19            data: { 
20              'countryId': selectedItem,
21              'addSelectStateItem': "true" 
22            },
23            success: function (data, textStatus, jqXHR) {
24                stateProvince.html('');
25                $.each(data,
26                    function (id, option) {
27                        stateProvince.append($('<option></option>').val(option.id).html(option.name));
28                    });
29            },
30            error: function (jqXHR, textStatus, errorThrown) {
31                alert('Failed to retrieve states.');
32            },
33            complete: function (jqXHR, textStatus) {
34                loading.hide();
35            }
36        });
37    }
38    if ($(document).has('[data-trigger="country-select"]')) {
39        $('select[data-trigger="country-select"]').change(countrySelectHandler);
40    }
41    $.fn.countrySelect = function () {
42        this.each(function () {
43            $(this).change(countrySelectHandler);
44        });
45    }
46}(jQuery);