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 pass a anonymous function as an argument to another function?

A - true

B - false

Answer : A

Explanation

Yes! An anonymous function can be passed as an argument to another 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 a string value version of the current number in a format that may vary according to a browser's locale settings.?

A - toExponential()

B - toFixed()

C - toLocaleString()

D - toString()

Answer : C

Explanation

toLocaleString() − Returns a string value version of the current number in a format that may vary according to a browser's locale settings.

Q 6 - Which of the following function of String object is used to match a regular expression against a string?

A - concat()

B - match()

C - search()

D - replace()

Answer : B

Explanation

match() − Used to match a regular expression against a string.

Q 7 - Which of the following function of String object returns the calling string value converted to upper case while respecting the current locale?

A - toLocaleUpperCase()

B - toUpperCase()

C - toString()

D - substring()

Answer : A

Explanation

toLocaleUpperCase() − Returns the calling string value converted to upper case while respecting the current locale.

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

A - sup()

B - small()

C - strike()

D - sub()

Answer : C

Explanation

strike() − Causes a string to be displayed as struck-out text, as if it were in a <strike> tag.

Q 9 - Which of the following function of Array object returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found?

A - indexOf()

B - join()

C - lastIndexOf()

D - map()

Answer : C

Explanation

lastIndexOf() − Returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found.

Q 10 - Which of the following function of Array object reverses the order of the elements of an array?

A - reverse()

B - push()

C - reduce()

D - reduceRight()

Answer : A

Explanation

reverse() − Reverses the order of the elements of an array.

javascript_questions_answers.htm
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