Артем

$('div.posthide').hover(function () {
    $(this).children().eq(0);
})

for (i = 0,c = 0; i < chooseCell.length; i++) {
	if(c%10 == 0) c = 0;
	chooseCell[i].setAttribute('data-index', c);
	chooseCell[i].addEventListener('click', coordCell);
	c++;
}