Conditional branching: if, '?'

Question 1

all become false. Because of that they are called “falsy” values.

Answer 1

A number 0,
an empty string “”,
null,
undefined,
NaN

Question 2

shorten below and why

let accessAllowed = age > 18 ? true : false;

Answer 2

let accessAllowed = age > 18

can avoid using the question mark operator because the comparison itself returns true/false: