Is there really any equivalent of the python's function dir() in js?

Question

Python's dir() function reveals all the properties of an object and returns a list. This works for both functions and classes(objects). I found out that js has a console.dir() function similar to python's dir(). But this only works for objects. Not for functions.

Answer 1

reversed ( ) you can use Object.getOwnPropertyNames(obj) and
Object.getOwnPropertyNames(obj.prototype)

For example to get all the Array properties
Object.getOwnPropertyNames(Array) or
Object.getOwnPropertyNames(Array.protype)

for Number or String:
Object.getOwnPropertyNames(String.prototype)
Object.getOwnPropertyNames(Number.prototype)

and it works for any function too.

Answer 2

Use
Object.keys(obj)
to get all the properties of object obj.

Answer 3

Thanks Calviղ for the help! 😄

Answer 4

Calviղ does it work for Number or String or any other function?

Answer 5

help()