21

Question 1

Falsy Values

Answer 1

values that resolve to the Boolean false

Question 2

Truthy Values

Answer 2

values that resolve to the Boolean true

Question 3

Which Falsy Values exist?

Answer 3

0
‘’ (empty String)
undefined
null
NaN

Question 4

Boolean(‘Jonas’)

Answer 4

true
(any string that is not empty is a truthy value)

Question 5

if(height)

Answer 5

tests if the variable height is defined (has a value)
Example:
let height;
if(height) → false (undefined)