Just asking why
typeof Number
provides function as a result.
Other built-in objects like Math or JSON are objects and, according to this answer ( What does the built in object hierarchy look like in javascript? ), they should all be related to Object, not to Function.
Javascript design flaw or there's a meaning in that? Is that answer correct?
The Function constructor creates a new Function object. In JavaScript every function is actually a Function object.
Functions are glorified objects.
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Function
Of course, but the real question is why String Inherits from Function and JSON Inherits from Object. I can see no sense in this. For example if you add a method to the Function prototype, it will be available to String but not to JSON
A JavaScript object is a mapping between keys and values. Keys are strings and values can be anything. This makes objects a natural fit for hashmaps.
Functions are regular objects with the additional capability of being callable.
You can instantiate a String but you cannot instantiate a Math object. This is maybe the fact confusing you.
alert(new String());
alert(new Math());
Function is indeed derived from Function. Only JSON and Math are no functions.