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<Functional vs. Object-Oriented JavaScript Development ⁄ >




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I won't go too far from the truth if I state that JavaScript is such a flexible language that it can be used to write code that follows two radically different programming paradigms-functional programming and object-oriented programming (OOP).

Natively, the JavaScript language allows you to treat functions in just the same fashion as values. You can assign a function to a variable and also pass it around to other functions. Abstractly speaking, we can say that a JavaScript function is a value of a very special type: the value is the behavior provided and the type is something we can just call "function."

Natively, the JavaScript language also offers objects. In JavaScript, objects are seen as plain bags of properties and methods. They look more like simple dictionaries of data and behavior than fully-fledged objects as you will find in a qualified OOP language such as C#, Java, or C++. In classic OOP, a class represents the layout of what will actually become an object once an instance of that class is created through the new operator. In JavaScript, you have no classes that provide the blueprints for objects to create. In JavaScript, the "blueprint" for an object is an implicit concept and it looks a lot like a dictionary. So in JavaScript, you just create objects and store data into them. JavaScript objects, however, offer some degree of object-oriented capabilities such as encapsulation and inheritance.



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