Why does var name = 'jose' !== ''; return "true" and not true?

Question

When I run var name = 'jose' !== ''; in my console, it returns "true"

Why does it return "true" as a string and not true as a boolean?

I tried it with a different variable name and it returns a boolean. i.e.: var bobby = 'bob' !== '';

ryanpcmcquen · Accepted Answer · 2016-05-11T02:30:50.403

6

Because name is window.name. A special variable that is always a string. Type it into the console of any empty browser and you will get "".

You are reassigning its value in your statement.

edited May 11 '16 at 02:30

answered May 11 '16 at 02:16

ryanpcmcquen

what about bobby in the example above? – guradio May 11 '16 at 02:21
1

@guradio `var bobby` is a different variable name, so it is not in a String. – May 11 '16 at 02:22
There is no `window.bobby`. – ryanpcmcquen May 11 '16 at 02:22
shouldn't `var name` force it to be local? – andrewdotnich May 11 '16 at 02:26
1

@andrewdotnich Only if it's inside a function--the scope is `window` if it is not inside a function. – May 11 '16 at 02:26
@Jerry right on :) – andrewdotnich May 11 '16 at 02:28

score 0 · Answer 2 · answered May 11 '16 at 02:35

variable name .It refers to window.name, which is the name of the window.

Also variable document

window.name ,window.document [can't change var name from being window.name, which is a string]

don't use name as a global variable.

Eg

var name = {Name : "dd"};
console.log(name.Name);//Since it's a primitive won't work

2 Answers2