es6-const-let

Question 1

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

Answer 1

structure of source code which is grouped together.
{
{}

Question 2

What does block scope mean?

Answer 2

the area within if, switch conditions or for and while loops.

Question 3

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

Answer 3

block scoped

Question 4

What is the difference between let and const?

Answer 4

let variables can be updated but not re-declared; const variables can neither be updated nor re-declared

Question 5

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

Answer 5

because youre not reassign

Question 6

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

Answer 6

if you plan on changing use let if not then use const