I want to create object on the client side of aspx page. And i want to add functions to these javascript classes to make easier the life.

Actually i can get and use the objects (derived from the server side classes) which returns from the services. When i wanted to send objects from the client by jquery ajax methods, i couldn't do it :)

This is my javascript object:

function ClassAndMark(_mark, _lesson){

    this.Lesson = _lesson;
    this.Mark = _mark;
}


function Student(_name, _surname, _classAndMark){

    this.Name = _name;
    this.SurName = _surname;
    this.ClassAndMark = _classAndMark;
}

JSClass.prototype.fSaveToDB(){
    $.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: "/WS/SaveObject.asmx/fSaveToDB"),

        data: ????????????,

        dataType: "json"
    });
}

Actually i don't know what should be definition of classes and methods on the Server side but i think:

class ClassAndMark{

    public string Lesson ;
    public string Mark ;
}


class Student{

    public string Name ;
    public string SurName ;
    public ClassAndMark ClassAndMark ;
}

Web service is below but again i couldn't get what should be instead of the ???? :

[WebMethod()]
public void fSaveToDB(???? _obj)
{
 // How can i convert input parameter/parameters 
 // of method in the server side object?       
}