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

Answer & Solution

Answer: Option
Solution:

D). # 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

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

A).

B). /* Comment */

C). // Comment

D). # Comment

Why should comments be clear and concise?

A). To avoid confusion

B). To ensure they are ignored by the interpreter

C). To make them look professional

D). To make them longer

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).

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

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

A). Improved code readability

B). Easier debugging

C). Faster code execution

D). Better documentation

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 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