JQuery 操作/获取table具体代码

$("#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 
});