ajax怎么让对象传参数格式为user.name 而不是user[name]

var dictionary = {"typeId" : typeId, "typeName": typeName, "paramKey": paramKey, "paramValue": paramValue, "note": note, "reserve": reserve};

我有这样一个JS对象，要传到后台
不过我发现浏览器都是按这样的格式上传参数的
dictionary[typeId]:aaa
dictionary[typeName]:acas
dictionary[paramKey]:acsa
dictionary[paramValue]:scasc
dictionary[note]:asca
dictionary[reserve]:scasc

怎么变成下面的格式传到后台
dictionary.typeId:aaa
dictionary.typeName:acas
dictionary.paramKey:acsa
dictionary.paramValue:scasc
dictionary.note:asca
dictionary.reserve:scasc

对于js来说，这两种方式有什么区别吗？

 var dictionary = {"typeId" : typeId, "typeName": typeName, "paramKey": paramKey, "paramValue": paramValue, "note": note, "reserve": reserve};

dictionary=JSON.stringify(dictionary);//转为json字符串

''user.name" 将参数名用引号引起来