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.

Q 1 - Can you pass a anonymous function as an argument to another function?

A - true

B - false

Answer : A

Explaination

Yes! An anonymous function can be passed as an argument to another function.

Q 2 - Which built-in method calls a function for each element in the array?

A - while()

B - loop()

C - forEach()

D - None of the above.

Answer : C

Explaination

forEach() method calls a function for each element in the array.

Q 3 - Which of the following is correct about jQuery selector?

A - A jQuery Selector is a function which makes use of expressions to find out matching elements from a DOM based on the given criteria.

B - jQuery selectors are used to select one or more HTML elements using jQuery.

C - jQuery selectors start with the dollar sign and parentheses - $()

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 4 - Which of the following jQuery method gets the html contents (innerHTML) of the first matched element?

A - html( )

B - getHtml( )

C - getInnerHtml( )

D - None of the above.

Answer : A

Explaination

The html() method gets the html contents (innerHTML) of the first matched element.

Q 5 - Which of the following jQuery method filter out elements from a set of matched elements?

A - filter( selector )

B - setFilter( selector )

C - putFilter( selector )

D - None of the above.

Answer : A

Explaination

The filter( selector ) method can be used to filter out all elements from the set of matched elements that do not match the specified selector(s). The selector can be written using any selector syntax.

Q 6 - Which of the following jQuery method gets a set of elements containing the unique next siblings of each of the given set of elements?

A - locateNext( selector )

B - getNext( selector)

C - next( selector )

D - None of the above.

Answer : C

Explaination

The next( [selector] ) gets a set of elements containing the unique next siblings of each of the given set of elements.

Q 7 - Which of the following jQuery method gets a set of elements containing the unique previous siblings of each of the matched set of elements?

A - parents( selector )

B - prev( selector)

C - siblings( selector )

D - None of the above.

Answer : B

Explaination

The prev( [selector] ) method gets a set of elements containing the unique previous siblings of each of the matched set of elements.

Q 8 - Which of the following jQuery method removes all child nodes from the set of matched elements?

A - empty( )

B - delete( )

C - remove( expr )

D - None of the above.

Answer : A

Explaination

The empty( ) method removes all child nodes from the set of matched elements.

Q 9 - Which of the following jQuery method can be used to attach a function to be executed whenever an AJAX request begins and there is none already active?

A - ajaxStart( callback )

B - ajaxComplete( callback )

C - ajaxSend( callback )

D - ajaxStop(callback)

Answer : A

Explaination

The ajaxStart( callback ) method can be used to attach a function to be executed whenever an AJAX request begins and there is none already active.

Q 10 - Which of the following jQuery method can be used to attach a function to be executed whenever AJAX request completed successfully?

A - ajaxStart( callback )

B - ajaxSuccess( callback )

C - ajaxSend( callback )

D - ajaxStop(callback)

Answer : B

Explaination

The ajaxSuccess( callback ) method can be used to attach a function to be executed whenever AJAX request completed successfully.

jquery_questions_answers.htm