es6-const-let Flashcards
1
Q
What is a code block? What are some examples of a code block?
A
it is the area where code is executed
2
Q
What does block scope mean?
A
the scope of the block
3
Q
What is the scope of a variable declared with const or let?
A
block scope
4
Q
What is the difference between let and const?
A
let can be re-assigned - const cannot be reassigned
5
Q
Why is it possible to .push() a new value into a const variable that points to an Array?
A
the assigned array will not be mutated
6
Q
How should you decide on which type of declaration to use?
A
use const first then let
