$("#nav_box tr").each(function (i) { //var text = $(this).children("td:first").text(); //var proid = $(this).find("input:hidden").val(); //alert("proid==" + i + "===" + proid); var num = $("#ProNum" + i).val(); //数量 var price = $("#Price" + i).val();//价格 var percent = $("#Percent" + i).val(); //折扣 var discountAmount = percent * price; //折扣价 $("#discountAmount" + i).val(discountAmount.toFixed(2)) //折扣价格 var total = discountAmount * num; //小计=折扣价*数量 $("#Total" + i).val(total.toFixed(2)); //小计 });