boolean value then it returns the opposite boolean.

$2.$ If we perform

$$ on undefined variables then it returns true.

$3.$ If we perform

U on a variable which has some value or points to some

a reference then it returns false.

Directions:

$1.$ Create a new variable named

myObj and assign it the value of an

object literal

$2.$ Write a conditional statement that uses the

J operator to check if

myObj contains the key bool,

and if it does not: add the key with the value of true