Routing code for Flourish book - https://flourishbooks.app/credits/ credits page

flourish_credit_routing.js

(function () {
  if (location.href.indexOf("credits") !== -1) {
    if (location.hash.length) {
      var hash = location.hash;
      var book = hash.split("-");
      var hashFinalDone = false;
      if (book[0]) {
        book = book[0].split("#book")[1];
        book = parseInt(book[0]);
        if (isNaN(book)) {
          book = 1;
        }
      }
      location.hash = "#book" + book;
      function hashHandler() {
        if (!hashFinalDone) {
          location.hash = hash;
          hashFinalDone = true;
        }
        window.removeEventListener("hashchange", hashHandler);
      }
      window.addEventListener("hashchange", hashHandler, false);
      setTimeout(hashHandler, 2000);
    }
  }
})();