What does the Temporal Dead Zone (TDZ) refer to?

What is the purpose of block scope in JavaScript?

A). To limit the visibility and accessibility of variables

B). To make variables global

C). To create constants

D). To execute functions

What is lexical scoping in JavaScript?

A). Variables scoped to the entire codebase

B). Variables scoped to their functions

C). Variables scoped based on their position in the code

D). Variables scoped based on their names

Which of the following correctly defines a block scope?

A). A scope that encompasses the entire codebase

B). A scope that encompasses a function

C). A scope that encompasses a block of code delimited by curly braces

D). A scope that encompasses an object

What is the main difference between var and let in terms of scope?

A). var is block-scoped, let is function-scoped

B). var is function-scoped, let is block-scoped

C). Both var and let are block-scoped

D). Both var and let are function-scoped

What is the benefit of block scope in JavaScript?

A). It reduces variable conflicts

B). It increases global scope

C). It simplifies variable declarations

D). It makes variables inaccessible

What is the output of console.log(innerVar); outside exampleFunction if let innerVar = 'Hello'; is declared inside exampleFunction?

A). Hello

B). undefined

C). Error

D). null

What happens if you try to access a block-scoped variable outside its block?

A). The variable is accessible globally

B). The variable is accessible within its block

C). An error occurs

D). The variable is accessible within a function

How can you access a variable declared in an inner block from an outer block?

A). Using the var keyword

B). Using the let keyword

C). Using the const keyword

D). Using the this keyword

What is block scope in JavaScript?

A). Variables scoped globally

B). Variables scoped within a function

C). Variables scoped to a block

D). Variables scoped to an object

What is the benefit of block scope in loops?

A). It allows variables to be reassigned within each iteration

B). It prevents variable hoisting

C). It restricts variables to the loop block

D). It makes variables globally accessible