What is the benefit of block scope in loops?

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

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

Which keyword introduces block-scoped variables in JavaScript?

A). var

B). let

C). const

D). function

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

A). A zone with no variables

B). A zone where variables are in memory but not accessible

C). A zone where variables are accessible globally

D). A zone with limited variable scope

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

How does block scope help prevent variable hoisting issues?

A). By moving variables to the top of the code

B). By restricting variables to their block

C). By making variables accessible globally

D). By assigning default values to variables

What happens when you declare a constant with const inside a block and try to reassign it?

A). It throws an error

B). It allows reassignment

C). It assigns the value globally

D). It assigns a default value

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 output of console.log(outerVar); outside outerFunction if let outerVar = 'Outer'; is declared inside outerFunction?

A). Outer

B). undefined

C). Error

D). null