name Lydia and age 21

["name", "Lydia"] and ["age", 21]

["name", "age"] and undefined

Error

["banana", "apple", "pear", "orange"]

[["banana", "apple"], "pear", "orange"]

["banana", "apple", ["pear"], "orange"]

SyntaxError

a is bigger, 6 and b is bigger, 3

a is bigger, undefined and b is bigger, undefined

undefined and undefined

SyntaxError

"Lydia"

"Sarah"

Error: cannot redeclare Person

SyntaxError

{Symbol('a'): 'b'} and ["{Symbol('a')"]

{} and []

{ a: "b" } and ["a"]

{Symbol('a'): 'b'} and []

"I made it!"

Promise {<resolved>: "I made it!"}

Promise {<pending>}

undefined

[1, [2, 3, 4]] and undefined

[1, [2, 3, 4]] and { name: "Lydia", age: 21 }

[1, 2, 3, 4] and { name: "Lydia", age: 21 }

Error and { name: "Lydia", age: 21 }

SyntaxError

ReferenceError

TypeError

undefined

"Just give Lydia pizza already!"

TypeError: not a function

SyntaxError

undefined

false null []

null "" true

{} "" []

null null true