Are you familiar with the term "spaghetti code"? This is a metaphor you might hear from non-JavaScript developers in criticism of the language. It is code with no structure. It will consist of line after line of statements. Some may be wrapped in functions, some not at all. And if you are lucky, all 9,000 lines of code will be in one file. This "spaghetti" structure is probably the result of procedural programming.
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Now let’s look at how we will design each class. A class is a blueprint for creating objects. The book class we create will provide us with a blueprint for creating book objects.
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Some things the class will need to be able to do are get and set the title, get and set the author, and get and set the ISBN. These will be the methods of the class. Here is what our book class should look like given our requirements:
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