How do you add a note to explain a line of code in JavaScript?

What is the purpose of single-line comments in code?

A). To add executable code

B). To increase execution speed

C). To explain and document the code

D). To replace code

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

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

Which of the following is a valid single-line comment in JavaScript?

A). // This is a comment

B). /* This is a comment */

C).

D). # This is a comment

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

What happens if you place a single-line comment within a string in JavaScript?

A). It will be executed as code

B). It will be treated as a comment

C). It will be treated as part of the string

D). It will cause a syntax error

How can single-line comments help during debugging?

A). By highlighting errors

B). By temporarily disabling code

C). By changing code execution

D). By improving performance

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

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 will be ignored by the JavaScript interpreter?

A). Variable declarations

B). Function definitions

C). Single-line comments

D). Keywords