A more refined Javascript typeof? [duplicate]

Question

Is there a way for typeof to return what an object is?

typeof {};

returns "object"

typeof [];

also returns "object". Is there a way in js to return "array"?

On top of that, is there a way to tell if an object is a DOM object, a javascript object or whatever object?

Answer 1

You can't extend the typeof operator but for better type inspection you can (ab)use Object.prototype.toString

Object.prototype.toString.call([]) === '[object Array]'
Object.prototype.toString.call(document) === '[object HTMLDocument]`