Author: Kas Thomas

ABC’s of Adobe ADBC

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In a first-person opinion piece, Kas Thomas asks, then answers, the question: ‘Is Adobe Acrobat Database Connectivity (ADBC) ready for production use?’ Post your thoughts in the Planet PDF Forum.

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JavaScript – Response Dialogs, An interactive session

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Introduces the use of the response dialog which he sees as a mechanism to let the programmer get special additional information from the user.

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Time for an Acrobat JavaScript Test

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Kas Thomas offers a chance to test your knowledge of Acrobat JavaScript with a new
20-question quiz; answers and explanations provided.

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Test your knowledge of standard JavaScript core-language functionality

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Test your knowledge of standard JavaScript core-language functionality by taking this 20-question quiz developed by expert user, author and developer Kas Thomas; answers and explanations provided.

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Make It Easy on Yourself

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One of the things that makes JavaScript such a powerful, easy-to-use language is its relaxed data-typing. But sometimes, you NEED a number to be a number. New Planet PDF columinist Kas Thomas gives you the insight into a host of JavaScript tricks to perform variable type conversions.

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Tips for Writing Reliable Code

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Kas Thomas shares a few work habits and practices that will help you write better code–assuming, of course, that you already know at least the basics of programming!

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Image Mapping in PDF – Create a JavaScript Color Picker

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Kas presents an exercise on how to set up an image map in a PDF file and couple it to a Perl script running on a server, creating an RGB color picker as an example.

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Using Colors in Acrobat JavaScript

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Kas offers a crash course in manipulating color in PDF files.

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Save Yourself Some Typing with ‘With’

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One trick I’ve learned (the hard way) for reducing the number of bugs in
my JavaScript is to make use of any and all tools and techniques for
cutting down on the amount of typing I have to do. Kas unveils new ‘secret weapon’ against typos.

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Numerical Methods and ASCII in AcroJS

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The (disturbing) subject of bugs in Acrobat, and points out one problem that could very well cause you grief if you ever try to do any numerical operations on character values in strings.

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