What is the output of console.log(i); outside the loop if let i = 10; is declared inside a loop?

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

How can you ensure variable immutability within a block?

A). Declare the variable with var

B). Declare the variable with let

C). Declare the variable with const

D). Assign a default value

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

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 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 hoisting in JavaScript?

A). Moving variables to the top of their function or global scope

B). Making variables undefined

C). Creating new variables

D). None of the above

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

Which keyword introduces block-scoped variables in JavaScript?

A). var

B). let

C). const

D). function

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(blockVar); outside a block if let blockVar = 'Block'; is declared inside a block?

A). Block

B). undefined

C). Error

D). null