Difference between object oriented and object base

问题:

What is the difference between an object oriented and an object based programming language? Is JavaScript is an object oriented or based?

回答1:

Wikipedia says:

In computer science, the term object-based has two different senses:

• A somehow limited version of object-oriented programming, where one or more of the following restrictions applies: (a) There is no implicit inheritance, (b) there is no polymorphism, (c) only a very reduced subset of the available values are objects (typically the GUI components).

• Prototype-based systems (that is, those based on "prototype" objects that are not instances of any class).

Javascript is object based.

回答2:

Object Oriented is based on message passing, no classes or inheritance involved.

"Object oriented" coined by Dr Alan Kay has been hijacked by C++, Java and Co, Dr Alan Kay made it clear that OO was messages, not classes. Dr Alan Kay On OO "OOP to me means only messaging, local retention and protection and hiding of state-process, and extreme late-binding of all things."

Erlang, LISP, Smalltalk are OO programming languages, not C++, Java, c# etc which are in effect object based.

回答3:

Object-oriented language

Object-oriented language doesn't has in-built object. It has all feature of OOP. Object-oriented languages are C++, C#, Java etc

Object-based language

Object-based language doesn't support all the features of OOPs like Polymorphism and Inheritance. It has in-built object like javascript has window object.languages are Javascript, VB etc.