Stocker un paramètre d'URL dans le local storage

<script>
  function setGclid() {
    var gclid = getParam('gclid');
    var current_gclid = localStorage.getItem('gclid');
    if (gclid && gclid != current_gclid) {
      analytics.identify({
        gclid: gclid,
      });

      localStorage.setItem('gclid', gclid);
    };
  };

  setGclid();
</script>