ajax学习笔记(1)

            var prm = Sys.WebForms.PageRequestManager.getInstance();
            alert(prm.get_isInAsyncPostBack()); //判断是否为异步提交
一.Ajax类

<form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
    
    <script language="javascript" type="text/javascript">
        Type.registerNamespace("AspNetAjaxOverView"); //注册命名空间
        //写一个类,=号后为构造方法
        AspNetAjaxOverView.Person = function(firstName, lastName)
把这个类注册到命名空间
AspNetAjaxOverView.Person.registerClass("AspNetAjaxOverView.Person");
    //定义子类    
        AspNetAjaxOverView.Employee = function(firstName, lastName, title)
继承父类的构造方法
AspNetAjaxOverView.Employee.initializeBase(this, [firstName, lastName]);
            
            this._title = title;
        }
        AspNetAjaxOverView.Employee.prototype = 
注册时第二个参数表明为继承父类
    AspNetAjaxOverView.Employee.registerClass("AspNetAjaxOverView.Employee", AspNetAjaxOverView.Person);
    </script>

二.异步通讯类
1.服务器端定义一个C#类
  public class Employee
 {
  private string _FirstName;
  private string _LastName;
  private string _Title;

  public Employee() { }
  public Employee(string firstName, string lastName, string title)
  public string FirstName
  public string LastName
  public string Title
 }
2.服务器端接收请求的GetEmployee.ashx

}

3.客户端调用这个类

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三．客户端调用Webservice
1.服务器端Webservice

namespace AspNetAjaxOverview
}

2.客户端调用

<asp:ScriptManager ID="ScriptManager1" runat="server">
    <Services>
    <!--为ScriptManager指定WebService服务器端程序,会自动生成客户端代理-->
        <asp:ServiceReference Path="EmployeeService.asmx" />
    </Services>
</asp:ScriptManager>

<script language="javascript" type="text/javascript">
    function showEmployee(firstName, lastName, title)
>