[JavaScript] JavaScript AjAX 面向对象

代码摘自Jeffrey Zhao的Demo
<script language="javascript" type="text/javascript">
        Type.registerNamespace("AspNetAjaxOverView");
        
        AspNetAjaxOverView.Person = function(firstName, lastName)
        {
            this._firstName = firstName;
            this._lastName = lastName;
        }
        AspNetAjaxOverView.Person.prototype =
        {
            get_firstName : function()
            {
                return this._firstName;
            },
            get_lastName : function()
            {
                return this._lastName;
            },
            toString : function()
            {
                return String.format("Hello, I'm {0} {1}.",
                    this.get_firstName(),
                    this.get_lastName());
            }
        }
        AspNetAjaxOverView.Person.registerClass("AspNetAjaxOverView.Person");
        
        AspNetAjaxOverView.Employee = function(firstName, lastName, title)
        {
            AspNetAjaxOverView.Employee.initializeBase(this, [firstName, lastName]);
            
            this._title = title;
        }
        AspNetAjaxOverView.Employee.prototype =
        {
            get_title : function()
            {
                return this._title;
            },
            toString : function()
            {
                return AspNetAjaxOverView.Employee.callBaseMethod(this, "toString") +
                    " My title is '" + this.get_title() + "'.";
            }
        }
        AspNetAjaxOverView.Employee.registerClass("AspNetAjaxOverView.Employee", AspNetAjaxOverView.Person);
    </script>