글쓰기 - 질문과 답변 <script> (function () { var check = document.getElementById('secret-check'); var label = document.getElementById('secret-pw-label'); var pw = document.getElementById('secret-pw'); check.addEventListener('change', function () { label.style.display = check.checked ? 'block' : 'none'; pw.required = check.checked; if (!check.checked) pw.value = ''; }); })(); </script>