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

Which of the following comments will result in an error if placed inside a JavaScript function?

A). // This is a comment

B). /* This is a comment */

C).

D). # This is a comment

Which of the following is true about multi-line comments?

A). They can contain other multi-line comments

B). They cannot be used to comment out code

C). They can span multiple lines

D). They must be at the beginning of 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

Which of the following is ignored by the JavaScript interpreter?

A). Variable declarations

B). Function definitions

C). Comments

D). Keywords

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

A). To ensure they do not cause syntax errors

B). To prevent the code from running

C). To make the code easier to understand for others

D). To increase code execution speed

How can comments help in debugging JavaScript code?

A). By executing commented code

B). By providing explanations

C). By ignoring parts of the code

D). By highlighting errors

What is the syntax for writing an inline comment in JavaScript?

A). # This is an inline comment

B). // This is an inline comment

C). /* This is an inline comment */

D).

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

A). /* This is a comment */

B). // This is a comment

C).

D). # This is a comment

What is the purpose of comments in code?

A). To add executable code

B). To increase execution speed

C). To explain and document the code

D). To replace code

How do you 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).