ajax data参数 使用json对象传递

 创建一个json对象

var obj = {}；
obj.productId = productId + "|" + parseInt($("#buyNum").text()) ;
obj.payType = payType;
obj.tRealPrice = tRealPrice;
obj.tIntegral = tIntegral;
obj.cardNo = bankId;
obj.payToken = $("#payToken").val();
//可以根据不同条件传递添加属性
if(from == "luck"){
	var luck_tPromotionAdId = $("#luckInfo").data("luck_tPromotionAdId");
	var luck_tSchedule = $("#luckInfo").data("luck_tSchedule");
	var luck_tActivityId = $("#luckInfo").data("luck_tActivityId");
	if($.ckIsEmpty(tPromotionAdId)){
		obj.tPromotionAdId = tPromotionAdId ;
	}
	obj.tSchedule = luck_tSchedule ;
	obj.tActivityId = tActivityId
}

ajax 使用json对象参数

$.ajax({
        type : "post",
        url  : $.ckGetContext() + "/pay/doPayOrder",
        data : obj,
        dataType : "json",
        success : function(data){
            var json = $.ckObjToJsonStr(data.cmbData);
            $("body").append("<form id="ckForm" style="display: none;" method="post"></form>");
            $("#ckForm").attr({"action":data.cmbaddress});
            var input = "<input name="jsonRequestData" value="" + json + "" type="hidden">";
            $("#ckForm").append(input);
            $("#ckForm").submit();
        },
        error : function(msg){
            alert(msg)
        }
    });

总结：当ajax的dataType为“json”时，传递的参数即为json对象