https://www.xanax.com/-/media/Base-Themes/SearchTheme/Scripts/component-search-ajax.js

1/**
2 * Provides methods for working searches using Ajax
3 * @module ajax
4 * @param  {jQuery} $ Instance of jQuery
5 * @param  {Document} document dom document object
6 * @return {ApiModel} list of Api methods for Search Ajax functionality
7*/
8XA.component.search.ajax = (function ($, document) {
9    var ApiModel, getPrameterByName;
10
11    /**
12    * @name module:ajax.ApiModel
13    * @constructor
14    * @augments Backbone.Model
15    */
16    ApiModel = Backbone.Model.extend(
17        /** @lends module:ajax.ApiModel.prototype **/
18
19        {
20            /**
21            * Makes ajax request and calls callback on success
22            * @method
23            * @param {Object} properties properties of ajax call and callback
24            */
25            getData: function (properties) {
26                var siteName = this.getPrameterByName("sc_site"),
27                    url = typeof properties.excludeSiteName !== "undefined" && properties.excludeSiteName
28                        ? properties.url
29                        : XA.component.search.url.createSiteUrl(properties.url, siteName);
30                Backbone.ajax({
31                    dataType: "json",
32                    url: url,
33                    success: function (data) {
34                        properties.callback(data);
35                    }
36                });
37            },
38            /**
39             * Gets value of parameter from url
40             * @method
41             * @param {String} name name of parameter that should be taken from url
42             * @param {String} url link from which parameter should be taken
43             * @returns {string} parameter value
44             */
45            getPrameterByName: function (name, url) {
46                if (!url) url = window.location.href;
47                name = name.replace(/[\[\]]/g, "\\$&");
48                var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
49                    results = regex.exec(url);
50                if (!results) return null;
51                if (!results[2]) return '';
52                return decodeURIComponent(results[2].replace(/\+/g, " "));
53            }
54        });
55
56    return new ApiModel();
57
58}(jQuery, document));