Q
How do you comment out a block of code using multi-line comments in JavaScript?

Answer & Solution

Answer: Option D
Solution:
Multi-line comments can be used to comment out entire blocks of code by starting the comment with /* and ending with */.
Related Questions on Average

What is the primary purpose of multi-line comments?

A). To execute code

B). To write long explanations

C). To increase code speed

D). To replace code

How are multi-line comments treated by the JavaScript interpreter?

A). As syntax errors

B). Ignored

C). Converted to single-line comments

D). Executed as code

Which of the following is the correct syntax for a multi-line comment in JavaScript?

A).

B). /* This is a comment */

C). # This is a comment

D). // This is a comment

What can multi-line comments help improve in JavaScript code?

A). Code execution speed

B). Code documentation

C). Code readability

D). Code performance

What happens if a multi-line comment overlaps with an existing code block in JavaScript?

A). The comment is executed as code

B). The comment is ignored

C). The comment causes a syntax error

D). The comment is displayed as plain text

Can multi-line comments be nested within each other in JavaScript?

A). Yes

B). No

C). Only in specific cases

D). Only in global scope

What happens if you do not close a multi-line comment in JavaScript?

A). The code will run normally

B). It will cause a syntax error

C). The comment will extend indefinitely

D). It will become a single-line comment

What is the primary use of multi-line comments during development?

A). To execute multiple lines of code

B). To temporarily disable code

C). To increase code performance

D). To shorten the code

How do you write a multi-line comment in JavaScript?

A). /* This is a comment */

B). // This is a comment

C).

D). # This is a comment

Which of the following is NOT a valid use of multi-line comments in JavaScript?

A). Writing executable code

B). Adding documentation

C). Temporarily disabling code

D). Adding notes