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).
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
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
Can single-line comments be used to add TODO notes in code?
A). Yes
B). No
C). Only in certain cases
D). Only in multi-line comments
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 do you add a note to explain a line of code in JavaScript?
A). By adding a comment using //
B). By using #
C). By using /* ... */
D). By using
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
Which of the following single-line comments would be used to explain a variable declaration?
A). // Variable to store user age
B). /* Variable to store user age */
C).
D). # Variable to store user age
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