Which of the following is true about single-line comments in JavaScript?
A). They can contain other comments
B). They cannot be used within functions
C). They span multiple lines
D). They end at the end of the line
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
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
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 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
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
Can single-line comments be used to disable code temporarily?
A). Yes
B). No
C). Only in certain cases
D). Only in multi-line comments
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 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).
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