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<JavaScript for C# programmers: prototypes, the basics ⁄ >




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Despite the fact that the keyword class is reserved, there are no classes in JavaScript as you'd understand them from C#. And, yet, it is an object-oriented programming language: there are objects, after all. It's all made even more confusing since JavaScript has a new keyword. How does it new up an object instance, if there are no classes?

In short, instead of using classes as a template from which you can create (instantiate) objects, in JavaScript you use other objects. These objects are known as prototypes, and JavaScript uses what's known as prototypal inheritance, rather than class inheritance. The biggest problem that people have with OOP in JavaScript is that they start off from a class-based model and try and fit that model to JavaScript. Due to the flexibility of JavaScript you can get part of the way there, but it all feels a little contrived.

So, in this series, I want you to forget all about class-based OOP and start over.



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