[JavaScript] Wrap Pāli Words in Span Element

function markInSpan(htmlString) {
  return string.replace(/[AaBbCcDdEeGgHhIiJjKkLlMmNnOoPpRrSsTtUuVvYyĀāĪīŪūṀṁṂṃŊŋṆṇṄṅÑñṬṭḌḍḶḷ]+/g, '<span>$&</span>');
}