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

Q 1 - Can you access Cookie using javascript?

A - true

B - false

Answer : A

Explanation

Yes! JavaScript can also manipulate cookies using the cookie property of the Document object.

Q 2 - 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

Explanation

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

Q 3 - Which built-in method returns the character at the specified index?

A - characterAt()

B - getCharAt()

C - charAt()

D - None of the above.

Answer : C

Explanation

charAt() method returns the character at the specified index.

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 Number object returns the number's value?

A - toString()

B - valueOf()

C - toLocaleString()

D - toPrecision()

Answer : B

Explanation

valueOf() − Returns the number's value.

Q 6 - Which of the following function of String object returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order?

A - localeCompare()

B - search()

C - substr()

D - concat()

Answer : A

Explanation

localeCompare() − Returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order.

Q 7 - Which of the following function of String object returns the calling string value converted to lower case?

A - toLocaleLowerCase()

B - toLowerCase()

C - toString()

D - substring()

Answer : B

Explanation

toLowerCase() − Returns the calling string value converted to lower case.

Q 8 - Which of the following function of String object causes a string to be displayed as a subscript, as if it were in a <sub> tag?

A - sup()

B - small()

C - strike()

D - sub()

Answer : D

Explanation

sub() − Causes a string to be displayed as a subscript, as if it were in a <sub> tag.

Q 9 - Which of the following function of Array object removes the last element from an array and returns that element?

A - pop()

B - push()

C - join()

D - map()

Answer : A

Explanation

pop() − Removes the last element from an array and returns that element.

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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