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

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

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

Which of the following best describes the behavior of JavaScript's const keyword?

A). It prevents variables from being redeclared

B). It ensures variables cannot be reassigned

C). It provides global scope for variables

D). It allows variables to change their data type

What is the primary distinction between const and let in JavaScript?

A). const variables are immutable

B). let variables are block-scoped

C). const variables have function scope

D). let variables can be reassigned

What will be the output of the code above?

A). 30

B). 31

C). Error

D). Undefined

What will be the output of the code above?

A). 10

B). 20

C). Error

D). Undefined

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

Which of the following statements is true about constants declared using const?

A). They can be reassigned multiple times

B). They are hoisted to the top

C). They are mutable

D). They are immutable

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). 30

B). 31

C). TypeError

D). Undefined