ES6 CONST LET

Question 1

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

Answer 1

Code block is the code inside the curly brace, this is where values are given to variables

Question 2

What does block scope mean?

Answer 2

Block scope is whatever is inside the block

Question 3

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

Answer 3

block, var function

Question 4

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

Answer 4

You can modify the variable, but can not assign the variable a new value
Because it’s still within its code-block

Question 5

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

Answer 5

If the variable’s value is going to change use let
If the variables’ value is going to remain constant use const

Question 6

What is the difference between let and const?

Answer 6

Let are not inside code-block and const is
Let variables can be changed at any time whereas constants can not be reassigned