Javascript Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Javascript 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

Answer : C

Explanation

Both of the above options are correct.

Q 2 - Can you assign a anonymous function to a variable?

A - true

B - false

Answer : A

Explanation

Yes! An anonymous function can be assigned to a variable.

Answer : C

Explanation

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 4 - Which built-in method sorts the elements of an array?

A - changeOrder(order)

B - order()

C - sort()

D - None of the above.

Answer : C

Explanation

sort() method sorts the elements of an array.

Q 5 - Which of the following function of Boolean object returns the primitive value of the Boolean object?

A - toSource()

B - valueOf()

C - toString()

D - None of the above.

Answer : B

Explanation

valueOf() − Returns the primitive value of the Boolean object.

Q 6 - Which of the following function of String object returns the index within the calling String object of the last occurrence of the specified value?

A - lastIndexOf()

B - search()

C - substr()

D - indexOf()

Answer : A

Explanation

lastIndexOf() − Returns the index within the calling String object of the last occurrence of the specified value, or -1 if not found.

Q 7 - Which of the following function of String object creates an HTML anchor that is used as a hypertext target?

A - anchor()

B - link()

C - blink()

D - big()

Answer : A

Explanation

anchor() − Creates an HTML anchor that is used as a hypertext target.

Q 8 - Which of the following function of String object causes a string to be displayed in the specified color as if it were in a <font color='color'> tag?

A - fixed()

B - fontcolor()

C - blink()

D - bold()

Answer : B

Explanation

fontcolor() − Causes a string to be displayed in the specified color as if it were in a <font color = 'color'> tag.

Q 9 - Which of the following function of Array object returns true if every element in this array satisfies the provided testing function?

A - concat()

B - every()

C - push()

D - some()

Answer : B

Explanation

every() − Returns true if every element in this array satisfies the provided testing function.

Q 10 - Which of the following function of Array object represents the source code of an object?

A - toSource()

B - splice()

C - toString()

D - unshift()

Answer : A

Explanation

toSource() − Represents the source code of an object.

javascript_questions_answers.htm
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