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 - Which of the following is correct about jQuery?

A - The jQuery is very lightweight library - about 19KB in size ( Minified and gzipped ).

B - The jQuery has cross-browser support, and works well in IE 6.0+, FF 2.0+, Safari 3.0+, Chrome and Opera 9.0+

C - The jQuery supports CSS3 selectors and basic XPath syntax.

D - All of the above.

Answer : D

Explaination

All of the above options are correct.

Q 2 - Which of the following type of variable takes precedence over other if names are same?

A - global variable

B - local variable

C - Both of the above.

D - None of the above.

Answer : B

Explaination

A local variable takes precedence over a global variable with the same name.

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 adds more elements, matched by the given selector, to the set of matched elements?

A - add( selector )

B - addElement( selector )

C - append(selector)

D - None of the above.

Answer : A

Explaination

The add( selector ) method adds more elements, matched by the given selector, to the set of matched elements.

Q 6 - Which of the following jQuery method finds all the child nodes inside the matched elements (including text nodes), or the content document, if the element is an iframe?

A - getChildren( selector )

B - getContents( [selector])

C - contents(selector)

D - None of the above.

Answer : C

Explaination

The contents( ) method finds all the child nodes inside the matched elements (including text nodes), or the content document, if the element is an iframe.

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

A - getClass( name )

B - getStyle( name)

C - css( name )

D - None of the above.

Answer : C

Explaination

The css( name ) method returns a style property on the first 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 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 serializes a set of input elements into a string of data?

A - jQuery.ajax( options )

B - jQuery.ajaxSetup( options )

C - serialize( )

D - serializeArray( )

Answer : C

Explaination

The serialize() method serializes a set of input elements into a string of data.

jquery_questions_answers.htm