logis is easy...

This solution will work but if you leave the parameter as empty it will return false but i considered that the input should be boolean so its not a big deal tho

it won't cause an error and will return same res as yours, is it not?

very nice solution!

But they are not booleans

doesn check for null, undefined so on...

Another problem with not returning this arises, when you try to check whether your created object is an instance of NameMe or not.

var person = new NameMe('John', 'Doe');
person instanceof NameMe; // false, if you return a new object, which this solution does.

:)

Since there are no prototype changes, it does not matter. Wouldn't best practice be to use "this" for any constructor function?

This is obviously an intro repo meant to teach about the constructor functions. A workaround that defeats the purpose of the constructor does not seem it should be a preferred solution.