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 correct way to represent a constant in JavaScript?
A). CONSTANT_VALUE
B). constantValue
C). const_value
D). ConstValue
Which of the following is a valid JavaScript variable name?
A). $varName
B). first_name
C).
D). _variable
Which of the following is a valid JavaScript function name?
A). function 1
B). function_name
C). function()
D). $function
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
Which naming convention separates words with underscores?
A). camelCase
B). PascalCase
C). snake_case
D). kebab-case
What is the significance of using meaningful names for identifiers?
A). Improve code efficiency
B). Make the code shorter
C). Enhance code readability
D). Ensure code security
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
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 not a valid JavaScript identifier?
A). first_name
B). $2users
C). break
D). myVar