JavaScript Quiz 1

Which type of JavaScript value is described as having fixed values?

• Variables

• Functions

• Literals

• Objects

Which type of JavaScript value is described as having variable values?

• Literals

• Variables

• Constants

• Arrays

What is the correct way to declare a constant variable in JavaScript?

• let x = 5;

• const fname = "John";

• var y = 10;

• static z = 20;

How does JavaScript interpret the keyword "let"?

• It interprets "LET" and "Let" as "let".

• It only interprets "let" as "let".

• It interprets "LET" as "let".

• It interprets "Let" as "let".

What are variables identified with in JavaScript?

• Numbers

• Unique names called identifiers

• Symbols

• Reserved words

Why can't reserved words be used as JavaScript identifiers?

• They are too long

• They are case sensitive

• They are JavaScript keywords

• They contain special characters

What type of scope do variables declared with 'let' have?

• Global Scope

• Function Scope

• Block Scope

• Module Scope

Can variables declared with 'let' be redeclared in the same scope?

• Yes, always

• No, never

• Only in strict mode

• Only in non-strict mode

Before ES6, what types of scope did JavaScript have?

• A) Block Scope and Global Scope

• B) Global Scope and Function Scope

• C) Function Scope and Block Scope

• D) Block Scope and Local Scope

What happens to variables declared inside a block in JavaScript?

• A) They can be accessed from anywhere in the code.

• B) They cannot be accessed from outside the block.

• C) They are automatically global variables.

• D) They are converted to constants.