What happens if you try to reassign a value to a constant declared using const?

Which of the following statements about const is true?

A). Variables declared with const can be reassigned

B). const variables have function scope

C). const variables cannot be used in loops

D). const variables are block-scoped

What is the primary advantage of using block scope in JavaScript?

A). Reducing code size

B). Preventing variable hoisting

C). Avoiding global variables

D). Improving performance

What will happen when you try to execute this code?

A). 14 will be logged to the console

B). 14159 will be logged to the console

C). SyntaxError will occur

D). TypeError will occur

In JavaScript, const variables are not hoiste What does this mean?

A). They are hoisted to the top of the block

B). They cannot be used before declaration

C). They are accessible in nested scopes

D). They are block-scoped variables

What will be the output of the code above?

A). 30

B). 31

C). TypeError

D). Undefined

What will be the output of the code above?

A). 30

B). 31

C). Error

D). Undefined

Which of the following statements is true about block scope in JavaScript?

A). Variables declared with let have global scope

B). Variables declared with let have function scope

C). Variables declared with let are block-scoped

D). Variables declared with let are hoisted

What will be the output of the code above?

A). 10

B). 20

C). Error

D). Undefined

Which keyword is used to declare block-scoped variables in JavaScript?

A). var

B). let

C). const

D). block

Which statement about JavaScript's const is true?

A). const variables can be redeclared

B). const variables are globally scoped

C). const variables are mutable

D). const variables cannot be reassigned