false null []

null "" true

{} "" []

null null true

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

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

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

SyntaxError

name Lydia age 21

["name", "Lydia"] ["age", 21]

["name", "age"] undefined

Error

[1, 2, 3, 4, 5]

[1, 2, 3, 5]

[1, 2, 3, 4]

TypeError

"class"

"function"

"object"

"string"

{ default: function default(), name: "Lydia" }

{ default: function default() }

{ default: "Hello world", name: "Lydia" }

{ function default() }

NaN

20

ReferenceError

undefined

"Sorry, you're too young."

"Yay! You're old enough!"

ReferenceError

undefined

{ name: "Lydia", age: 21 }

{ name: "Lydia", age: 21, city: "Amsterdam" }

{ name: "Lydia", age: 21, city: undefined }

"Amsterdam"

"🥑" и "😍"

"🥑" и "😎"

"😍" и "😎"

"😎" и "😎"