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Welcome to the Javascript MCQs Page

Dive deep into the fascinating world of Javascript with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Javascript, a crucial aspect of Web Technologies. In this section, you will encounter a diverse range of MCQs that cover various aspects of Javascript, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Web Technologies.

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Check out the MCQs below to embark on an enriching journey through Javascript. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Web Technologies.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Javascript. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Javascript MCQs | Page 6 of 11

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Q51.
Single Line Comment in JavaScript Starts with _________ Symbol.

a.

"\\"

b.

"//"

c.

"$$"

d.

"#"

Discuss
Answer: (b)."//"
Q52.
Which of the following is considered as End of Single line comment ?

a.

End of Line

b.

Semicolon

c.

End of Statement

d.

"*/" Symbol

Discuss
Answer: (a).End of Line
Q53.
Comments in JS are ignored by ____________.

a.

Compiler

b.

Operating System

c.

JVM

d.

Browser

Discuss
Answer: (d).Browser
Q54.
Comment Statement is _________________ type of statement.

a.

Executive

b.

Non Important

c.

Non Executable

d.

Non Usable

Discuss
Answer: (c).Non Executable
Q55.
JS Comment can be used for following purposes -

a.

to Hide Non-usable line

b.

to Hide Non-usable Multiline Code

c.

used for Documentation

d.

All of these

Discuss
Answer: (d).All of these
Q56.
Which of the statement will be neglected by Browser ?

a.

<p>Google</p>

b.

<p>Yahoo</p>

c.

<h1>Heading</h1>

d.

All Statements

Discuss
Answer: (c).<h1>Heading</h1>
Q57.
Person XYZ wrote his name and date of code creation at the start , What kind of comment he has written ?

a.

Functional Comment

b.

Code Hiding Comment

c.

Documentation Comment

d.

None of These

Discuss
Answer: (c).Documentation Comment
Q58.
In multiple line comment , End of the comment is specified by ________ Symbol.

a.

//

b.

*/

c.

*\

d.

\\

Discuss
Answer: (b).*/
Q59.
Which of the following is not a compound assignment operator ?

a.

===

b.

<<=

c.

+=

d.

>>=

Discuss
Answer: (a).===
Q60.
If a string cannot be converted to a number __________ will be returned.

a.

NaN

b.

Infinite

c.

Null

d.

Zero

Discuss
Answer: (a).NaN
Page 6 of 11

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