What is the best practice for naming JavaScript identifiers?

Which of the following is not a valid JavaScript identifier?

A). my_var

B). $amount

C). const

D). variable1

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 not a valid JavaScript identifier?

A). first_name

B). $2users

C). break

D). myVar

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

A). UPPERCASE

B). lowercase

C). camelCase

D). kebab-case

Which naming convention uses hyphens to separate words?

A). CamelCase

B). snake_case

C). Kebab-Case

D). PascalCase

What is the correct spelling for the naming convention starting with uppercase for each word?

A). Pascal_Case

B). pascalcase

C). pascalCase

D). PascalCase

What does the term 'case-sensitive' mean for identifiers in JavaScript?

A). Identifiers can have uppercase and lowercase letters interchangeably

B). Identifiers must have consistent capitalization throughout the code

C). Identifiers are not sensitive to case differences

D). Identifiers are sensitive to differences in uppercase and lowercase letters

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 the identifier 'improveCode' using camelCase?

A). improveCode

B). Improve-Code

C). IMPROVECODE

D). improve_code

Which of the following is a valid JavaScript identifier?

A). user-name

B). 2users

C). _user

D). user name