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Question 1

Primitive Types (Primitives) in JS

Answer 1

Number
String
Boolean
Undefined
Null
Symbol
BigInt

Question 2

Reference Types (Objects) in JS

Answer 2

Object Literal
Arrays
Functions
Many More…

Question 3

Primitives are stored in …
Objects are stored in …

Answer 3

Primitives are stored in the Call Stack.
Objects are stored in the Heap.

Question 4

What happens when you change the value of a primitive variable and reference variable?

Answer 4

• primitive variable: it does not affect any other variables that have the same value
• reference variable: it will affect any other variables that reference the same object or array

Question 5

const me = {
name: 'Jonas',
age: 30
}
const friend = me
friend.age = 27

console.log(friend) // (1)
console.log(me) // (2)

Answer 5

(1)

{name: 'Jonas', age: 27}

(2)

{name: 'Jonas', age: 27}