1 2 3

[1, 2, 3]

() => {console.log(x);}

2

3

Undefined

Ошибка

1

0

"true"

true

[1, 2]

[1, 2, 3]

[2, 3, 4]

[2, 3]

[1, 2, 3]

[1, 2, 3, 4]

[1, 2, 4]

Ошибка

11, 0

2, 0

'11', '1'

'11', NaN

Anytown

Newtown

undefined

Ошибка

10

20

30

ReferenceError

10

20

undefined

ReferenceError: x is not defined

1

5

undefined

null

пустую строку