8ch checkbox and input field preference thing 2.0

function enforce8chanForm() {
    function simulateClick(el) {
        ['mousedown','mouseup','click'].forEach(type =>
            el.dispatchEvent(new MouseEvent(type, { bubbles: true, cancelable: true }))
        );
        el.dispatchEvent(new Event('change', { bubbles: true }));
    }

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

    ['qrname','qrsubject','qremail','qrpassword'].forEach(id => {
        const el = document.getElementById(id);
        if (el && el.tagName === 'INPUT') {
            el.focus();
            el.value = '';
            el.dispatchEvent(new Event('input', { bubbles: true }));
            el.dispatchEvent(new Event('change', { bubbles: true }));
            el.blur();
        }
    });
}
window.addEventListener('load', enforce8chanForm);