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 - 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 length of the string?

A - length()

B - size()

C - index()

D - None of the above.

Answer : A

Explanation

length() method returns the length of the string.

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?

A - toString()

B - toFixed()

C - toLocaleString()

D - toPrecision()

Answer : A

Explanation

toString() − Returns a string value version of the current number.

Q 6 - Which of the following function of String object is used to find a match between a regular expression and a string, and to replace the matched substring with a new substring?

A - concat()

B - match()

C - replace()

D - search()

Answer : C

Explanation

replace() − Used to find a match between a regular expression and a string, and to replace the matched substring with a new substring.

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

A - toLocaleLowerCase()

B - toLowerCase()

C - toString()

D - substring()

Answer : A

Explanation

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

Q 8 - Which of the following function of String object causes a string to be displayed in fixed-pitch font as if it were in a <tt> tag?

A - fixed()

B - big()

C - blink()

D - bold()

Answer : A

Explanation

fixed() − Causes a string to be displayed in fixed-pitch font as if it were in a <tt> 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 removes the first element from an array and returns that element?

A - reverse()

B - shift()

C - slice()

D - some()

Answer : B

Explanation

shift() − Removes the first element from an array and returns that element.

javascript_questions_answers.htm
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