SyntaxError

ReferenceError

I love to program

undefined to program

${(x => x)('I love') to program

TypeError

Lydia

Sarah

undefined

ReferenceError

['🍕', '🍫', '🥑', '🍔']

['🍝', '🍫', '🥑', '🍔']

['🍝', '🍕', '🍫', '🥑', '🍔']

ReferenceError

true

false

undefined

TypeError

5

Promise {<pending>: 5}

Promise {<fulfilled>: 5}

Error

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