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).
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
How can you comment out a block of code in JavaScript?
A). Using // at the beginning of each line
B). Using /* at the start and */ at the end
C). Enclosing the code in {}
D). Using
How can you temporarily disable a piece of code without deleting it?
A). By commenting it out using /* */ or //
B). By placing it in a string
C). By removing it from the file
D). By placing it in a function
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
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
What happens if you include a comment within a string in JavaScript?
A). The comment will be executed as code
B). The comment will be ignored by the interpreter
C). The comment will be treated as part of the string
D). It will cause a syntax error
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 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 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