8ch checkbox and input field preference thing

function enforce8chanForm() {
    ['qrcheckboxNoFlag','qrcheckboxScramble'].forEach(id => {
        const cb = document.getElementById(id);
        if (cb && cb.type === 'checkbox') cb.checked = true;
    });

    const fields = ['qrname','qrsubject','qremail','qrpassword']
        .map(id => document.getElementById(id))
        .filter(el => el && el.tagName === 'INPUT');

    fields.forEach(f => {
        f.value = '';
        f.disabled = true;
        f.setAttribute('autocomplete', 'off');
    });

    setTimeout(() => {
        fields.forEach(f => {
            f.disabled = false;
            f.value = '';
        });
    }, 1000);
}
window.addEventListener('load', enforce8chanForm);