Why typeof null is 'object' in javascript?

Question

Consider this code:

typeof null == 'object'//returns  true

And Consider this code:

typeof null == '' //returns  false

Why?

@ShahroozJefriㇱ Well, `typeof null == ''` is a little obvious, right? `"object" == ""` returns `false`. — DontVoteMeDown, Jan 13 '14 at 11:10
Actually, it is. The third answer states that "null is not an object, it is a primitive value. For example, you cannot add properties to it. Sometimes people wrongly assume that it is an object, because typeof null returns "object". But that is actually a bug (that might even be fixed in ECMAScript 6)." — Sergiu Paraschiv, Jan 13 '14 at 11:12
@SergiuParaschiv: it's been pretty much ruled out AFAIK, breaks too much. — Qantas 94 Heavy, Jan 13 '14 at 11:13
Yup, that's what the answer says. That's why this is a duplicate. — Sergiu Paraschiv, Jan 13 '14 at 11:13

score 9 · Answer 1 · edited Jan 13 '14 at 11:12

9

A long-standing bug, since the beginning of JS.

edited Jan 13 '14 at 11:12

Sujith PS

answered Jan 13 '14 at 11:10

Scimonster

score -2 · Accepted Answer · answered Jan 13 '14 at 11:13

-2

typeof(null) returns "object"

and

 typeof('') returns "string"!

answered Jan 13 '14 at 11:13

Ali RAN

2 Answers2