cb.parentElement.removeChild(cb.previousElementSibling)
if (req.status == 200) {
cb.style.display = ''
+ const delta = cb.checked ? 1 : -1
+ const count_td = cb.parentElement.previousElementSibling
+ count_td.textContent = parseInt(count_td.textContent) + delta
} else {
cb.parentElement.insertBefore(document.createTextNode('❗'), cb)
}