Q
In JavaScript, what is the syntax for a single-line comment?

Answer & Solution

Answer: Option A
Solution:
Related Questions on Average

What should developers do before deploying code that contains disabled code segments using comments?

A). Ensure that all comments are removed

B). Ensure that comments are added for each line of disabled code

C). Ensure that the code is well-documented with comments explaining the disabled segments

D). Ensure that the code contains sufficient debugging information to enable the disabled segments

What happens if you mix single-line and multi-line comments incorrectly in JavaScript?

A). It will cause the code to execute twice

B). It will result in a syntax error

C). It will create a new comment type called hybrid comments

D). It will disable all comments in the code block

What should be avoided when using comments to prevent code execution?

A). Using comments to provide explanations about the code

B). Commenting out entire sections of code without a clear reason

C). Using comments to add debugging information

D). Using comments within functions

Which type of comments is commonly used to prevent code execution temporarily?

A). Single-line comments

B). Multi-line comments

C). Inline comments

D). Block comments

How can a developer disable a block of code using multi-line comments in JavaScript?

A). By adding a semicolon ; at the end of each line of code

B). By using the disable keyword

C). By wrapping the code block in /* */

D). By using the disableCode function

Which statement about using comments to prevent execution is accurate?

A). Comments are executed as code

B). Comments are ignored by the interpreter

C). Comments can contain executable code

D). Comments increase code performance

How can comments be used to prevent execution of code in programming languages?

A). By surrounding the code with curly braces {}

B). By prefixing the code with --

C). By enclosing the code in single quotes ''

D). By wrapping the code in comments /* */

What is the primary advantage of using comments to prevent execution compared to deleting code temporarily?

A). Comments allow developers to execute the code by toggling a flag

B). Comments provide a way to document why the code is disabled and can be re-enabled easily

C). Comments make the code more complex and difficult to understand

D). Comments improve code execution speed

What happens if you forget to close a multi-line comment in JavaScript?

A). The code within the comment will execute as normal

B). It will cause a syntax error

C). The comment will extend indefinitely

D). The code will be wrapped in a single-line comment

How can comments be used to document disabled code segments effectively in JavaScript?

A). By leaving the code as-is without any comments or explanations

B). By adding brief comments explaining why the code is disabled

C). By adding lengthy explanations and detailed notes about each disabled code segment

D). By replacing the code with a placeholder string