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 : C

Explanation

Both of the above options are correct.

Q 2 - Which of the following is the correct syntax to print a page using JavaScript?

A - window.print();

B - browser.print();

C - navigator.print();

D - document.print();

Answer : A

Explanation

window.print(); is the correct option.

Q 3 - Which built-in method combines the text of two strings and returns a new string?

A - append()

B - concat()

C - attach()

D - None of the above.

Answer : B

Explanation

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

Q 4 - Which of the following function of Number object forces a number to display in exponential notation?

A - toExponential()

B - toFixed()

C - toPrecision()

D - toLocaleString()

Answer : A

Explanation

toExponential(): Forces a number to display in exponential notation, even if the number is in the range in which JavaScript normally uses standard notation.

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 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?

A - toLocaleUpperCase()

B - toUpperCase()

C - toString()

D - substring()

Answer : B

Explanation

toUpperCase() − Returns the calling string value converted to upper case.

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

A - link()

B - small()

C - sup()

D - sub()

Answer : B

Explanation

small() − Causes a string to be displayed in a small font, as if it were in a <small> 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 returns a string representing the array and its elements?

A - toSource()

B - sort()

C - splice()

D - toString()

Answer : D

Explanation

toString() − Returns a string representing the array and its elements.

javascript_questions_answers.htm
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