https://sandiegozoowildlifealliance.org/themes/custom/park_stable/scripts/urlparameters.js?tls0xz

1(function ($) {
2
3  if(window.location.href.indexOf('?') !== -1) {
4
5    $(document).ready(function () {
6      $('a').on('click', function (e) {
7        var attach_param = true;
8        var parameter_tags = window.location.search;
9        var current_path = window.location.pathname;
10        var destination_path = null;
11
12        if (this.getAttribute('href').charAt(0) != "#") {
13          destination_path = new URL(this.href, window.location.origin).pathname;
14        }
15
16        // check for exception classes
17        const class_exceptions = [
18          "cboxElement"
19        ];
20        var class_list = $(this).attr('class');
21        if(class_list != null) {
22          var class_list_array = class_list.split(/\s+/);
23          for(var i=0;i < class_exceptions.length;i++) {
24            if(class_list_array.includes(class_exceptions[i])) {
25              attach_param = false;
26            }
27          }
28        }
29
30        // Only preserve query params within the Story Hub / Newsroom
31        // search experience. Other site links should stay clean.
32        const allowed_paths = [
33          "/pressroom/news-releases",
34          "/newsroom/search-stories",
35          "/newsroom/search-news",
36          "/newsroom/search",
37          "/story-hub/search-science",
38          "/story-hub/search-stories",
39          "/story-hub/search-news",
40          "/story-hub/search",
41          "/story-hub/media-resources"
42        ];
43        const reset_paths = [
44          "/newsroom/search-stories",
45          "/newsroom/search-news",
46          "/story-hub/search-science",
47          "/story-hub/search-stories",
48          "/story-hub/search-news",
49          "/story-hub/media-resources"
50        ];
51
52        if (!allowed_paths.includes(current_path)) {
53          attach_param = false;
54        }
55
56        if (!destination_path || !allowed_paths.includes(destination_path)) {
57          attach_param = false;
58        }
59
60        if (destination_path && reset_paths.includes(destination_path)) {
61          attach_param = false;
62        }
63
64        // if not an exception class, continue with reattaching param
65        if(attach_param) {
66          // check for anchor tag
67          if(this.getAttribute('href').charAt(0) != "#") {
68            e.preventDefault();
69
70            var destination = new URL(this.href, window.location.origin);
71            var current_params = new URLSearchParams(parameter_tags);
72
73            current_params.forEach(function (value, key) {
74              // Keep explicit link params, only carry over missing query params
75              // from the current page.
76              if (!destination.searchParams.has(key)) {
77                destination.searchParams.append(key, value);
78              }
79            });
80
81            location.href = destination.toString();
82          } else {
83            location.href = this.href;
84          }
85        }
86      });
87    });
88  }
89}(jQuery));