document.querySelectorAll('a[rel]').forEach((link) => { const relValues = link.getAttribute('rel').split(' '); const filteredRel = relValues.filter(val => val !== 'noopener' && val !== 'noreferrer'); if (filteredRel.length > 0) { link.setAttribute('rel', filteredRel.join(' ')); } else { link.removeAttribute('rel'); } });