I have a bit of extra time on my hands right now so I decided to do a series on design patterns in Javascipt. I know some of you have probably heard rumors that Javascript is an object oriented language, right? Well, that is true.
Now some folks used to tell you that Javascript is not object-oriented. They'll probably say something like it's object-based. They'll reason that Javascript doesn't have true inheritance, encapsulation, or polymorphism. What these people really were (and some may still be) saying is that JS does not have class-based object oriented programming, natively. But, classes are not the only way to implement OOP. JS, Lua, and Perl implement OOP using prototypes.
Now since JS is an object-oriented language, we should find at least some of the GOF design patterns useful.
In the next post we will look at the Template Method pattern.
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2 comments:
The introduction makes an important distinction between JavaScript being object-oriented and being class-based. The explanation that JavaScript uses prototypes rather than relying on traditional class-based inheritance provides useful context for understanding why familiar object-oriented concepts can be implemented differently in JavaScript.
The connection to GoF design patterns is also interesting because patterns originally described in a class-oriented context do not necessarily have to be implemented using classes. For developers exploring Corporate Javascript Training, understanding JavaScript's prototype-based approach can make it easier to adapt established design patterns to real JavaScript applications.
This is also a useful foundation for anyone following a Corporate Javascript Course, because it establishes the language model before moving into individual patterns. The distinction between object-oriented programming and class-based object-oriented programming is particularly helpful when evaluating how design patterns should be expressed in JavaScript.
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