louisbarclay · February 23, 2021 10:32
diff --git a/search-and-replace.html b/search-and-replace.html
 <script>
  const originDomainAndPath = "view.flodesk.com/emails";
  const superMailerDomain = "mailer.super.so";

  async function createObserver() {
    // Start observing the document
    observeDoc();

    // Observer function
    function observeDoc() {
      const observer = new MutationObserver(
        // You don't use any mutation info
        // It's just a convenient trigger
        () => {
          searchAndReplace();
        }
      );

      // Observe entire document and childList to capture all mutations
      observer.observe(document, {
        childList: true,
        subtree: true,
      });
    }
  }

  function searchAndReplace() {
    Array.from(document.getElementsByTagName("a")).forEach((element) => {
      if (element.href.includes(originDomainAndPath)) {
        console.log(element.href);
        element.href = element.href.replace(
          originDomainAndPath,
          superMailerDomain
        );
      }
    });
  }

  searchAndReplace();
  createObserver();
 </script>