A.AB.BC.CD.DYou create a Microsoft ASP.NET application ……

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create a Web form by using ASP.NET AJAX.  The Web form contains the following code fragment. （Line numbers are included for reference only.）  | English | Chinese | Japan | Korean | - 149 - Test Information Co.， Ltd. All rights reserved. 01 <script type= text javascript >  02  03 Sys.Application.add_init（initComponents）；  04  05 function initComponents（） {  06  07 }  08  09 < script>  10  11 <asp：ScriptManager ID= ScriptManager1   12 runat= server   >  13 <asp：TextBox runat= server  ID= TextBox1   >  You need to create and initialize a client behavior named MyCustomBehavior by using the  initComponents function. You also need to ensure that MyCustomBehavior is attached to the TextBox1 Textbox control.  Which code segment should you insert at line 06？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create a Web form by using ASP.NET AJAX.  You write the following client-script code fragment to handle the exceptions thrown from asynchronous  postbacks. （Line numbers are included for reference only.）  01 <script type= text javascript > 02 function pageLoad（）  03 {  04 var pageMgr =  05 Sys.WebForms.PageRequestManager.getInstance（）；  06  07 }  08  09 function errorHandler（sender， args）  10 {  11  12 }  13 < script>  You need to ensure that the application performs the following tasks：  &iexcl；&curren;Use a common clien-script function named errorHandler. &iexcl；&curren;Update a Label control tat has an ID named lblError with the error message. &iexcl；&curren;Prevent the browser from displaying any message box or Javascript error  What should you do？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create a Web form by using ASP.NET AJAX.  You write the following client-script code fragment to handle the exceptions thrown from asynchronous  postbacks. （Line numbers are included for reference only.）  01 <script type= text javascript > 02 function pageLoad（）  03 {  04 var pageMgr =  05 Sys.WebForms.PageRequestManager.getInstance（）；  06  07 }  08  09 function errorHandler（sender， args）  10 {  11  12 }  | English | Chinese | Japan | Korean | - 146 - Test Information Co.， Ltd. All rights reserved. 13 < script>  You need to ensure that the application performs the following tasks： &iexcl；&curren;Use a common clien-script function named errorHandler. &iexcl；&curren;Update a Label control that has an ID named lblEror with the error message. &iexcl；&curren;Prevent the browser from displaying any message box or Javascript error  What should you do？ （）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You write the following code segment to create a client-script function. （Line numbers are included for reference only.）  01 function updateLabelControl（labelId， newText） {  02 var label = $find（labelId）；  03 label.innerHTML = newText；  04 }  The client script function uses ASP.NET AJAX and updates the text of any Label control in the Web form.  When you test the client script function， you discover that the Label controls are not updated. Youreceive  | English | Chinese | Japan | Korean | - 145 - Test Information Co.， Ltd. All rights reserved. the following JavaScript error message in the browser：  ’null’ is null or not an object.  You need to resolve the error.  What should you do？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You write the following code segment to create a client-script function. （Line numbers are included for  | English | Chinese | Japan | Korean | - 144 - Test Information Co.， Ltd. All rights reserved. reference only.）  01 function updateLabelControl（labelId， newText） {  02 var label = $find（labelId）；  03 label.innerHTML = newText； 04 }  The client script function uses ASP.NET AJAX and updates the text of any Label control in the Web form.  When you test the client script function， you discover that the Label controls are not updated. You receive the following JavaScript error message in the browser：  ’null’ is null or not an object.  You need to resolve the error.  What should you do？（）

A.A
B.B
C.C
D.D