July 2008
Intermediate to advanced
160 pages
2h 35m
English
Content preview from The ActionScript™ 3.0 Migration Guide: Making the Move from ActionScript 2.0Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 5. Scope
ATTEMPTING TO CORRECTLY target objects in Flash often creates ActionScript bugs for new Flash developers. Flash’s reliance on movie timelines can make it hard to understand scope, or where variables can be referenced within the code. But it’s not just the timeline—the inner workings of a SWF file are unlike any other language. Scope issues in Flash can be confusing because of the complex arrangement of the timeline, movie clips, movie clips embedded in movie clips, buttons, buttons embedded in movie clips, and so on.
Luckily, the introduction of the display list and class-based architecture in ActionScript 3 eliminate most of the scope issues that were a problem in ActionScript 2. And as covered in Chapter 3, packages and classes ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.