A Final Word

In this column we continued our look at scripting Netscape 6. We took DOCJSLIB 1.1 and modified our browser-dependency strategy to be based on object oriented design. We educated you on the principles of object oriented design, and in particular the inheritance concept. We showed you how to apply inheritance to the way we create browser-dependent subclasses out of the browser-independent superclass. We taught you how to generate a class on the fly, how to define methods and properties, and how to inherit them from the superclass. We gave you a line-by-line instructions on how to use the new DOCJSLIB 1.2 in an application. We demonstrated the object oriented design concept with our traditional Tic-Tac-Toe game.

In this column, you have learned:

• How to use object-oriented design concepts
• How to inherit methods
• How to architect the include files
• How to write a browser sniffer
• How to create a browser-dependent subclass on the fly
• How to write a browser-independent superclass
• How to write a browser-dependent subclass
• How to write an application using DOCJSLIB 1.2

We provided the code for:

• Tic-Tac-Toe board game
• Browser sniffer
• Creating a browser-dependent subclass on the fly
• Browser-independent superclass
• Browser-dependent subclass for IE4
• Browser-dependent subclass for IE5
• Browser-dependent subclass for NS4
• Browser-dependent subclass for NS6

Just copy from these files and paste to your own application. A ZIP file version of all DOCJSLIB 1.2 library files was also provided.

Next: How to use obejct-oriented design concepts