What is the significance of using meaningful names for identifiers?

Which of the following is a valid JavaScript identifier?

A). user-name

B). 2users

C). _user

D). user name

Which of the following is a valid JavaScript function name?

A). function 1

B). function_name

C). function()

D). $function

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

A). $varName

B). first_name

C).

D). _variable

Which of the following is not a valid JavaScript identifier?

A). first_name

B). $2users

C). break

D). myVar

Which naming convention uses hyphens to separate words?

A). CamelCase

B). snake_case

C). Kebab-Case

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

A). UPPERCASE

B). lowercase

C). camelCase

D). kebab-case

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 file extensions is commonly used for JavaScript files?

A). JavaScriptIdentifiers.docx

B). JavaScriptIdentifiers.java

C). JavaScriptIdentifiers.js

D). JavaScriptIdentifiers.html

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