TypeOf the mistake of making the type judgment easily

Learn JS classmates know the data type JS has

String, number, Boolean, array, object, Null, Undefined

As a beginner I have always thought that the result of each data type return is this

typeof ("string")

String

typeof (111)

Number

typeof (True)

Boolean

typeof (Arr[])

Array

typeof (FN ())

function

typeof (NULL)

Null

typeof (Undefind)

Undefind

When I judge null and arr[] The result is this.
typeof (Arr[])

Object

typeof (NULL)

Object

Before the interview was asked I do not hesitate to answer the above results, and then test to find that the original is the following look of hope and JS small partners to do a mutual encouragement bar.

TypeOf the mistake of making the type judgment easily