What happens if you try to access a let variable before its declaration?

Can a let variable be redeclared in the same scope?

A). Yes

B). No

C). Only if it is a string

D). Only if it is a number

Can a const variable be declared without an initial value?

A). Yes

B). No

C). Only in strict mode

D). Only if it is an object

Which keyword allows block-level scope in ES6?

A). var

B). let

C). function

D). var and function

Can const be used for objects and arrays?

A). No

B). Yes

C). Only for arrays

D). Only for objects

Which keyword should be used for a variable that might be reassigned?

A). const

B). let

C). var

D). function

What will the following code output: { let y = 5; { let y = 10; console.log(y); } }?

A). 5

B). 10

C). undefined

D). ReferenceError

What is the temporal dead zone in ES6?

A). Time between function calls

B). Period between variable declaration and initialization

C). Time between two loops

D). Interval between event listeners

What is the scope of a variable declared with let?

A). Global

B). Function

C). Block

D). Object

What will the following code output: { const a = 10; a = 20; }?

A). 10

B). 20

C). undefined

D). TypeError

Can a variable declared with let be hoisted?

A). Yes, partially

B). No

C). Yes, fully

D). Only in strict mode