如何使用CSS来获得特定编号的孩子？

table

td

td

td:nth-child(2)

td:nth-child(3)

td

td:first-child + td

td:first-child + td + td

+ td

$(function() {
    $(\'td:first-child\').addClass(\"firstChild\");
    $(\".table-class tr\").each(function() {
        $(this).find(\'td:eq(1)\').addClass(\"secondChild\");
        $(this).find(\'td:eq(2)\').addClass(\"thirdChild\");
    });
});

table td.firstChild { /*stuff here*/ }
table td.secondChild { /*stuff to apply to second td in each row*/ }