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jQuery - Online Quiz


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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 - How can you get the total number of arguments passed to a function?

A - Using args.length property

B - Using arguments.length property

C - Both of the above.

D - None of the above.

Answer : B

Explaination

Using arguments.length property, we can get the total number of arguments passed to a function.

Answer : C

Explaination

A callback is a plain JavaScript function passed to some method as an argument or option. Some callbacks are just events, called to give the user a chance to react when a certain state is triggered.

Q 3 - Which built-in method returns the calling string value converted to upper case?

A - toUpperCase()

B - toUpper()

C - changeCase(case)

D - None of the above.

Answer : A

Explaination

toUpperCase() method returns the calling string value converted to upper case.

Q 4 - Which of the following jQuery method apply a style on an element?

A - addStyle(classes)

B - addClass( classes )

C - addCSSClass(classes)

D - None of the above.

Answer : B

Explaination

The addClass( classes ) method can be used to apply defined style sheets onto all the matched elements. You can specify multiple classes separated by space.

Q 5 - Which of the following jQuery method reduce the set of matched elements to a single element?

A - isEqual( index )

B - eq( index )

C - checkEqual( selector )

D - None of the above.

Answer : B

Explaination

The eq( index ) method reduces the set of matched elements to a single element.

Q 6 - Which of the following jQuery method gets the direct parent of an element?

A - offsetParent( selector )

B - offset( selector)

C - parent( selector )

D - None of the above.

Answer : C

Explaination

The parent( [selector] ) method gets the direct parent of an element. If called on a set of elements, parent returns a set of their unique direct parent elements.

Q 7 - Which of the following jQuery method sets the style property of an element?

A - setClass( name, value )

B - setStyle( name, value)

C - css( name, value )

D - None of the above.

Answer : C

Explaination

The css( name, value ) method sets a style property on the first matched element.

Q 8 - Which of the following jQuery method removes set of matched elements?

A - empty( )

B - delete( )

C - remove( expr )

D - None of the above.

Answer : C

Explaination

The remove( expr ) method removes all matched elements from the DOM.

Q 9 - Which of the following jQuery method checks if event.stopPropagation() was ever called on this event object?

A - isDefaultPrevented( )

B - isPropagationStopped( )

C - isImmediatePropagationStopped( )

D - None of the above.

Answer : B

Explaination

The isPropagationStopped() method of Event object returns whether event.stopPropagation() was ever called on this event object.

Q 10 - Which of the following jQuery method setups global settings for AJAX requests?

A - jQuery.ajax( options )

B - jQuery.ajaxSetup( options )

C - serialize( )

D - serializeArray( )

Answer : B

Explaination

The jQuery.ajaxSetup( options ) method setups global settings for AJAX requests.

jquery_questions_answers.htm
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