ajax中data傳參的兩種方式分析

/**
 * 訂單取消
 * @return {Boolean} 處理是否成功
 */
function orderCancel(orderId, commant){
 var flag = false;
 $.ajax({
 type: "POST",
 url: "../order/orderCancel.action", //orderModifyStatus
 data: {"orderId":orderId,"commant":commant},
 dataType:"json",
 async:false,
 cache:false,
 success: function(data){
 var member = eval("("+data+")"); //包數據解析為json 格式
 if(member.success=="true"){
 flag = true;
 }else if(member.success=="false") {
 alert(member.info);
 }
 },
 error: function(json){
 alert("訂單取消異常，請刷新后重試...");
 }
 });
 hidediv();
 return flag;
}