That's a bit misleading comment IMO. All the things that you mentioned, like JS, are OO, true. But I wouldn't say that they represent the state of the art of th

That's a bit misleading comment IMO. All the things that you mentioned, like JS, are OO, true. But I wouldn't say that they represent the state of the art of this paradigm at all, basically for two reasons. The first one is that pretty much everyone uses these languages in a more or less "procedural programming" manner. I cannot find many examples of people taking advantage of what objects, inheritance and polymorphism are. The second reason deals pretty much with this last statement. Even though people are not using properly the advantages of OOP in this kind of languages (myself included), most of the developers that I have contact with are using properly and taking advantage of the variety of characteristics of OOP in their Java, C#, programs. No matter if they are web projects or not. Nowadays I am trying to push myself harder to use OOP when programming in Ruby but it doesn't feel as natural as when I write code in Java.