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

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

A). $varName

B). first_name

C).

D). _variable

Which of the following file extensions is commonly used for JavaScript files?

A). JavaScriptIdentifiers.docx

B). JavaScriptIdentifiers.java

C). JavaScriptIdentifiers.js

D). JavaScriptIdentifiers.html

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

A). camelCase

B). snake_case

C). dash-case

D). PascalCase

What is the best practice for naming JavaScript identifiers?

A). Use short and cryptic names

B). Use meaningful and descriptive names

C). Use reserved keywords as identifiers

D). Use Unicode characters in identifiers

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

A). CONSTANT_VALUE

B). constantValue

C). const_value

D). ConstValue

Which of the following is not a valid JavaScript identifier?

A). first_name

B). $2users

C). break

D). myVar

What is the naming convention that starts with a lowercase letter and each subsequent word starts with a capital letter?

A). camelCase

B). Snake_Case

C). kebab-case

D). PascalCase

Which naming convention uses hyphens to separate words?

A). CamelCase

B). snake_case

C). Kebab-Case

D). PascalCase

What is the correct way to represent the identifier 'improveCode' using camelCase?

A). improveCode

B). Improve-Code

C). IMPROVECODE

D). improve_code

Which naming convention separates words with underscores?

A). camelCase

B). PascalCase

C). snake_case

D). kebab-case