Chapter 8Building and Extending Objects
Creating Instances
We introduced the concepts of object-oriented programming in Chapter 4, so you should already realize that not only does JavaScript support only limited object-oriented programming, but that some terms used here might not be used the same way they are in other languages (such as C++, C#, or Java). In JavaScript, an object is the template from which you make instances. In purely object-oriented languages, an object is the instance made from a class. If you have experience in true object-oriented languages, don’t let this terminology throw you off.
For example, suppose you have defined an employee object that includes some methods and properties of an employee, such as his or her social ...
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