es6-const-let

Question 1

What is a code block? What are some examples of a code block?

Answer 1

it is the area where code is executed

Question 2

What does block scope mean?

Answer 2

the scope of the block

Question 3

What is the scope of a variable declared with const or let?

Answer 3

block scope

Question 4

What is the difference between let and const?

Answer 4

let can be re-assigned - const cannot be reassigned

Question 5

Why is it possible to .push() a new value into a const variable that points to an Array?

Answer 5

the assigned array will not be mutated

Question 6

How should you decide on which type of declaration to use?

Answer 6

use const first then let