Why should comments be kept up-to-date with the code?

What will be the output of console.log('Hello World!'); // This is a comment?

A). Hello World!

B). Syntax Error

C). This is a comment

D). Undefined

How do single-line comments improve code readability?

A). By adding extra executable code

B). By explaining complex logic

C). By increasing code length

D). By making code run faster

Which of the following single-line comments would be used to explain a variable declaration?

A). // Variable to store user age

B). /* Variable to store user age */

C).

D). # Variable to store user age

What should you avoid when writing single-line comments?

A). Writing clear and concise comments

B). Writing too many comments

C). Writing comments that restate the code

D). Writing comments at the end of the code

Why should comments be clear and concise?

A). To avoid confusion

B). To increase code execution speed

C). To ensure they are ignored by the interpreter

D). To make them look professional

Which of the following is NOT a benefit of using single-line comments in JavaScript code?

A). Improved code readability

B). Easier debugging

C). Faster code execution

D). Better documentation

Can single-line comments be used to add TODO notes in code?

A). Yes

B). No

C). Only in certain cases

D). Only in multi-line comments

How can you temporarily disable a piece of code without deleting it?

A). By commenting it out using //

B). By placing it in a string

C). By removing it from the file

D). By placing it in a function

Which is the correct way to comment out the rest of a line after a statement in JavaScript?

A). # rest of line

B). // rest of line

C). /* rest of line */

D).

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

A). # This is a comment

B). // This is a comment

C). /* This is a comment */

D).