Which function is the root function in javascript? [duplicate]

Question

I'm trying understand core javascript. it's little bit confusing. When I evaluate

Object instanceof Function

its true , and Function instanceof Object its also true.

How and why?

Object and Function both refer to functions. Your question is confusing; you should re-read it. — Pointy
– Pointy, Commented Jan 7, 2015 at 18:09
You said you evaluated Object instanceof Function twice in your question. — gen_Eric
– gen_Eric, Commented Jan 7, 2015 at 18:10
You can have a look into this link .. stackoverflow.com/questions/14162038/… — Prashant Gaur
– Prashant Gaur, Commented Jan 7, 2015 at 18:11
It's probably good to know at this point how obj instanceof Func works. It simply checks whether Func.prototype is in obj's prototype chain. Since Object is a function, Function.prototype is in its prototype chain. Since Function is an object (every function is an object), Object.prototype is in its prototype chain. — Felix Kling
– Felix Kling, Commented Jan 7, 2015 at 18:14

Community · Accepted Answer · 2017-05-23 10:26:37Z

1

Becouse instanceof is evaluating Object and checking if this has as an instance of Function.constructor in its prototype chain, and reverse:

Function.__proto__.__proto__ // Object.prototype
Object.__proto__ // Function.prototype

Anyway, you have the full explanation on this answer.

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answered Jan 7, 2015 at 18:08

lante

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2 Comments

This doesn't explain why Object is an instance of Function.

And of course, Object is a function