Es6-const-let

Question 1

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

Answer 1

anything within { } if-else statements, for loops

Question 2

What does block scope mean?

Answer 2

area within code block where the variables only exist in

Question 3

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

Answer 3

both are block scope

Question 4

What is the difference between let and const?

Answer 4

let can be re assigned

Question 5

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

Answer 5

not reassigning the const variable, just changing what it is referring to

Question 6

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

Answer 6

use const all the time unless you get an error, then use let