Js question

Question

Hello, can someone explain why the code is outputing function?

function foo() {
return 2018;
}
foo.bar = "Programmers rule";
typeof foo; //function

Thank you a lot.

Answer 1

This really should be self-explanatory. Especially to someone who is level 15 like yourself.

Anyway, typeof will return the type of whatever thing you pass to it. You have created a function called foo, so when you say typeof foo, it will, of course, return function.

Answer 2

David The difference is between :

typeof foo; //function

and

typeof foo(); // number

If you call the function (by adding the "()" to it), what you get is what it returns. If not, you just get what foo is - a function.

Answer 3

It's added just for confusion and doesn't have any impact on the output. I guess what it does do is give a glimpse into the fact that functions are a type of object, and thus can have attributes.

Answer 4

I've just seen your edit on your first comment, so let me refer you to this page I found. Hopefully it will help explain. https://www.dofactory.com/tutorial/javascript-function-objects

Answer 5

Russ thanks. You explained it nicely. I will Check it out.

Answer 6

Russ I know about the typeof thing is just that in some challenges typeof is the data type after the return keyword, btw, shouldnt this return objects, since functions are objects?

Answer 7

Ah, I see. Its s lot clearer now. Also, does this bar property have any meaning here? Or is it added just for confusion?