https://p.westconcomstor.com/js/stripmkttok.js

1// LM-100892: Once page process mkt_tok, remove parameter from URL
2(function() {
3    var afterLoad = function (fn) {
4        if (window.attachEvent) {
5            window.attachEvent('onload', fn);
6        } else {
7            window.addEventListener('load', fn);
8        }
9    };
10    afterLoad(function () {
11      // LM-123191: Remaining '&' from removal of 'mkt_tok=' in tracked links from emails
12      // Parse all query parameters of location.search, remove mkt_tok, then reassemble the rest
13      if (location.search && location.search.length > 1 && location.search[0] == '?') {
14        var newSearch = '', stripped = false, params = location.search.substring(1).split('&');
15        params.forEach(function(item) {
16          if (item) {
17            if (item.indexOf('mkt_tok=') === 0) {
18              // Cache mkt_tok value into global variable, before stripping it from URL
19              window.__mktTokVal = window.__mktTokVal || item.substring(8);
20              stripped = true;
21            }
22            else {
23              // Put together the new "search" query except the leading '?'
24              newSearch += (newSearch ? '&' : '') + item;
25            }
26          }
27        });
28        if (stripped) {
29          // If, and only if, mkt_tok= parameter was found and stripped
30          // Replace window history entry with updated search portion of original URL 
31          window.history && history.replaceState('', null, location.pathname + (newSearch ? '?' + newSearch : '') + location.hash);
32        }
33      }
34    });
35})();