How Do I?

How Do I: Create and Use Classes in JavaScript?

By Chris Pels|18 minutes|

In this video Chris Pels shows how to create classes in JavaScript with functionality similar to other programming languages with object oriented capabilities. First a sample web site project is created with an external JavaScript file. A function() is created and the difference between using the function as a "function" and as a class constructor with the "new" keyword is discussed. Then public properties are added to the class constructor as well as private variables. Next a separate function is created and assigned as a method to the class. Alternatively, the same method is shown as a function defined in the class constructor. Finally, a private class method is created and used within the class constructor.

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This article was originally created on January 8, 2010

Author Information

Chris Pels

Chris Pels – Chris has been instrumental in the architecture, development, and implementation of a wide variety of business systems and databases as a technology consultant since 1986. He has extensive experience in business analysis, technical specifications, database design, several programming languages including C# and VB.NET, and statistical analysis. He holds a Ph.D. from The University of Michigan and has been a speaker at Microsoft TechEd, Microsoft DevDays, VSLive, numerous events in New England