Which of the following is not a valid identifier naming convention?

Which of the following is a valid JavaScript identifier?

A). user-name

B). 2users

C). _user

D). user name

Which of the following is not a valid JavaScript identifier?

A). my_var

B). $amount

C). const

D). variable1

Which type of case conversion is commonly used for naming variables in JavaScript?

A). UPPERCASE

B). lowercase

C). camelCase

D). kebab-case

Which of the following is a valid JavaScript variable name?

A). $varName

B). first_name

C).

D). _variable

What is the correct way to represent a constant in JavaScript?

A). CONSTANT_VALUE

B). constantValue

C). const_value

D). ConstValue

What is the purpose of following naming conventions for identifiers?

A). Improve code performance

B). Enhance code readability and maintainability

C). Ensure cross-browser compatibility

D). Reduce code size

Which of the following is a valid JavaScript function name?

A). function 1

B). function_name

C). function()

D). $function

What is the role of reserved keywords in JavaScript identifiers?

A). Can be used as identifiers without issues

B). Cannot be used as identifiers

C). Enhance code performance

D). Ensure code security

Which of the following is not a valid JavaScript variable name?

A). $varName

B). first_name

C).

D). _variable

Which naming convention separates words with underscores?

A). camelCase

B). PascalCase

C). snake_case

D). kebab-case