https://app.theinterngroup.com/tig_utm.js

1/**
2 * This script sets a custom cookie named "custom_ga" in the document with UTM parameters extracted from the URL query string.
3 * The cookie is set with an expiration of 30 days and is scoped to the domain of the current webpage.
4 * 
5 * @author Iddar Olivares <[email protected]>
6 * @copyright Magma Partners, 2024
7 *
8 * @param {Document} document - The global document object of the webpage.
9 * @param {Window} window - The global window object of the webpage.
10 */
11(function (document, window) {
12    // The name of the cookie to be set.
13    const cookieName = "custom_ga"; 
14    // The number of days after which the cookie will expire.
15    const cookieExpire = 30; 
16    //The domain of the current webpage, used for scoping the cookie.
17    const cookieDomain = location.hostname;
18    // The query string part of the URL, excluding the '?'.
19    const queryString = window.location.search.substring(1);
20    // An object to parse the query string.
21    const params = new URLSearchParams(queryString);
22    // An object to store the UTM parameters extracted from the query string.
23    const utmParams = {};
24    // Loop through each parameter in the URL query string
25    for (const [key, value] of params) {
26      // Check if the parameter key includes "utm_"
27      if (key.includes("utm_")) {
28        // Add the UTM parameter to the utmParams object

29        utmParams[key] = value;
30      }
31    }
32    // Encode the UTM parameters object into a URI safe string
33    const safetyUTMs = encodeURI(JSON.stringify(utmParams));
34    // Construct the cookie value string
35    const cookieValue = `${cookieName}=${safetyUTMs};expires=${cookieExpire};domain=${cookieDomain};path=/`;
36    // Set the cookie in the document
37    document.cookie = cookieValue;
38  })(document, window);