function modifyElements(pSel, cSel, rxStr) { const regex = new RegExp(rxStr, 'i'); const pEls = document.querySelectorAll(pSel); pEls.forEach(pEl => { const fEl = pEl.querySelector(cSel); if (fEl && regex.test(fEl.textContent)) { pEl.style.display = 'none'; } }); } let rx = /(hi are u lonely|want (an )?ai gf?)/i; modifyElements(".athing.comtr", ".comment", rx);