jQuery - Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to jQuery Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - Which of the following type of variable is visible only within a function where it is defined?

A - global variable

B - local variable

C - Both of the above.

D - None of the above.

Answer : B

Explaination

Local Variables: A local variable will be visible only within a function where it is defined. Function parameters are always local to that function.

Q 2 - Which built-in method combines the text of two strings and returns a new string?

A - append()

B - concat()

C - attach()

D - None of the above.

Answer : B

Explaination

concat() method returns the character at the specified index.

Q 3 - Which of the following jQuery selector selects elements with the given element tag-name?

A - $('tag-name')

B - $('#tag-name')

C - $('.tag-name')

D - None of the above.

Answer : A

Explaination

$('tag-name') selects all element of type tag-name in the document. For example, $('p') selects all paragraphs <p> in the document.

Q 4 - Which of the following jQuery method adds the specified class if it is not present, remove the specified class if it is present?

A - toggleStyleClass( class )

B - toggleClass( class )

C - toggleCSSClass( class )

D - None of the above.

Answer : B

Explaination

The toggleClass(class) method adds the specified class if it is not present, removes the specified class if it is present.

Q 5 - Which of the following jQuery method checks the current selection against an expression?

A - getIs( selector )

B - is( selector )

C - checkIs( selector )

D - None of the above.

Answer : B

Explaination

The is( selector ) method checks the current selection against an expression and returns true, if at least one element of the selection fits the given selector.

Q 6 - Which of the following jQuery method gets a set of elements containing all of the unique immediate children of each of the matched set of elements?

A - getChild( selector )

B - children( [selector])

C - getChildren(selector)

D - None of the above.

Answer : B

Explaination

The children( [selector]) method gets a set of elements containing all of the unique immediate children of each of the matched set of elements.

Q 7 - Which of the following jQuery method gets the height property of an element?

A - getCSSHeight( )

B - getHeight( )

C - height( )

D - None of the above.

Answer : C

Explaination

The height( ) method gets the CSS height of every matched element.

Q 8 - Which of the following jQuery method returns the top and left position of an element relative to its offset parent?

A - offset( )

B - offsetParent( )

C - position( )

D - None of the above.

Answer : C

Explaination

The position( ) method gets the top and left position of an element relative to its offset parent.

Q 9 - Which of the following jQuery method can be used to attach a function to be executed whenever an AJAX request completes?

A - ajaxStart( callback )

B - ajaxComplete( callback )

C - ajaxSend( callback )

D - ajaxStop(callback)

Answer : B

Explaination

The ajaxComplete( callback ) method can be used to register a callback to be executed whenever an AJAX request completes.

Answer : A

Explaination

The jQuery.get( url, [data], [callback], [type] ) method loads a remote page using an HTTP GET request.

jquery_questions_answers.htm
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