Passing UTM parameters onwards to other sites

@StudioFine 

Add the following JavaScript code to the Footer using Code Injection. Just update the LINKS array to whatever relative or absolute path(s) you'd like to add the query parameters to. 

This script loop through all of the links on the page and add the query parameters from the URL to the links that are defined in the LINKS variable. 

(function () {

  const LINKS = [
    '/some/relative/path',
    'https://www.example.com/donate'
  ];

  // Function to attach query parameters to a list of links
  function attachQueryParametersToLinks() {
    const selectors = LINKS.map(link => `a[href="${link}"]`);
    const links = document.querySelectorAll(selectors.join(','));
    const urlSearchParams = new URLSearchParams(window.location.search);

    // Iterate over the links and update their href attributes
    links.forEach(link => {
      const originalHref = link.getAttribute('href');
      const linkSearchParams = new URLSearchParams(link.search);
      const mergedSearchParams = new URLSearchParams([...urlSearchParams, ...linkSearchParams]);
      link.setAttribute('href', `${originalHref}?${mergedSearchParams.toString()}`);
    });
  }

  if (document.readyState == 'complete') {
    attachQueryParametersToLinks()
  } else {
    window.addEventListener('DOMContentLoaded', attachQueryParametersToLinks);
  }
})()

Be sure to place the javascript between <script> tags e.g.:

<script>
  // Add JS here
</script>