The Web Platform is a Triumph of Object-Oriented Programming | That HTML Blog

It’s not just that web APIs often take advantage of OOP. They would not exist without OOP! Virtually every web API you have ever used is designed specifically within the OOP paradigm. And every entity in the lifecycle of a web page is based on objects. These objects are instances of classes and in a great many cases these classes are subclasses of other classes. This means that key functionality is spread across a class hierarchy. That isn’t a bug, it’s a feature! And this means that it’s absurd to think that to write a web app you need to reach for a “framework”. The Web Platform is a framework.