jquery 遍歷 table 下所有得tr td

$("#middle").contents().find("tbody tr").each(function(i,n){
            var child = $(this).children();
            console.log(child);
            var dics = child.eq(1).find("td").text();
            var money = child.eq(3)..find("td").text();
            dataAxis.push(dics);
            data.push(money);
})