Javascript Online Quiz

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 : D

Explanation

All 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.

Q 3 - Which built-in method adds one or more elements to the end of an array and returns the new length of the array?

A - last()

B - put()

C - push()

D - None of the above.

Answer : C

Explanation

push() method adds one or more elements to the end of an array and returns the new length of the array.

Q 4 - Which built-in method reverses the order of the elements of an array?

A - changeOrder(order)

B - reverse()

C - sort(order)

D - None of the above.

Answer : B

Explanation

reverse() method reverses the order of the elements of an array -- the first becomes the last, and the last becomes the first.

Q 5 - Which of the following function of String object returns a number indicating the Unicode value of the character at the given index?

A - charAt()

B - charCodeAt()

C - concat()

D - indexOf()

Answer : B

Explanation

charCodeAt() − Returns a number indicating the Unicode value of the character at the given index.

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

A - substr()

B - search()

C - lastIndexOf()

D - indexOf()

Answer : D

Explanation

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

Q 7 - Which of the following function of String object returns a string representing the specified object?

A - toLocaleUpperCase()

B - toUpperCase()

C - toString()

D - substring()

Answer : C

Explanation

toString() − Returns a string representing the specified object.

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

A - fixed()

B - fontcolor()

C - fontsize()

D - bold()

Answer : C

Explanation

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

Q 9 - Which of the following function of Array object adds one or more elements to the end of an array and returns the new length of the array?

A - pop()

B - push()

C - join()

D - map()

Answer : B

Explanation

push() − Adds one or more elements to the end of an array and returns the new length of the array.

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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