AJAX

Question 1

In Ajax, which is not a trigger present in update panel?
Select one:
a. PostBackTrigger
b. SyncronousPostBackTrigger 
c. All are valid
d. AsyncPostBackTrigger

Answer 1

b. SyncronousPostBackTrigger

Question 2

In AJAX, which line will retrieve the XML DOM returned by the servlet?
Select one:
a. var xml = xmlHttpRequest.getResponse; 
b. var xml = ajaxReq.response;
c. var dom = req.XML;
d. var dom = xmlHttpRequest.responseXML;

Answer 2

d. var dom = xmlHttpRequest.responseXML;

Question 3

This function of the XMLHttpRequest object sends the request to the server?
Select one:
a. run
b. None of these.
c. submit 
d. send

Answer 3

d. send

Question 4

This object is used to make Ajax calls.
Select one:
a. Request
b. HttpRequest
c. XMLHttpRequest 
d. XMLRequest

Answer 4

c. XMLHttpRequest

Question 5

This property of the XMLHttpRequest object will contain the event handler to be called when the readystatechange event is fired.
Select one:
a. onstatuschange
b. None of these.
c. onreadystate 
d. onreadystatechange

Answer 5

d. onreadystatechange

Question 6

This property of the XMLHttpRequest object will have a value of 200 when the server sends back an HTTP response with an OK status code.
Select one:
a. readyState
b. None of these.
c. onreadystatechange
d. status

Answer 6

d. status

Question 7

This property of the XMLHttpRequest object will have a value of 4 when the server completes the requested operation.
Select one:
a. readyState
b. None of these. 
c. onreadystatechange
d. status

Answer 7

a. readyState

Question 8

What is JSON in Ajax?
Select one:
a. Server-side component for handling Ajax requests
b. An Ajax event controller
c. JavaScript library for building Ajax applications
d. Data interchange format in JavaScript

Answer 8

d. Data interchange format in JavaScript

Question 9

Which is not a control of Ajax?
Select one:
a. ScriptManager
b. Timer
c. UpdateProgress
d. ScriptProxy
e. UpdatePanel

Answer 9

d. ScriptProxy

Question 10

Which is not a parameter used for jQuery.ajax method?
Select one:
a. Cache
b. XML 
c. Data
d. URL
e. Type

Answer 10

b. XML

Question 11

Which is not a jQuery effect?
Select one:
a. spin( ) 
b. fadeOut( )
c. hide( )
d. show( )

Answer 11

a. spin( )

Question 12

Which CSS selector is not valid in jQuery?
Select one:
a. $( "#myDiv" )
b. $( "ul li:nth-child(2)" )
c. $( "*" )
d. All are valid. 
e. $( "li" )

Answer 12

d. All are valid.

Question 13

Which is not a valid jQuery event method?
Select one:
a. blur( )
b. onload( )
c. change( )
d. error( )

Answer 13

b. onload( )

Question 14

Which of these is not among the parameters used in the XMLHttpRequest open function?
Select one:
a. URL
b. http method 
c. form data
d. async on/off

Answer 14

b. http method

Question 15

Which of the following values are supported by JSON.
Select one or more:
a. 05 
b. NaN
c. null
d. undefined
e. false

Answer 15

c. null

e. false

Question 16

AJAX stands for:

Answer 16

Asynchronous JavaScript and XML

Question 17

(jQuery == $) && (jQuery === $)

Select one:
True
False

Answer 17

True