Demian Brecht Demian Brecht And a non-technical addendum: AS2 is the legacy language, AS3 is the current language.
New features that get added to the Flash player generally aren't usable from AS2. Example: AS2 prototype: MovieClip. Marty Marty Michael Apfelbeck Michael Apfelbeck 1 1 silver badge 8 8 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end. Does ES6 make JavaScript frameworks obsolete?
Featured on Meta. Now live: A fully responsive profile. You will notice when you work with this version of ActionScript that it helps you in a genius way.
It saves your time. There is no need now to waste your time in finding the complex errors manually. Now advanced compiler will catch all those compile time errors for you. AVM 2. It is an excellent renderer it can increase the pace of the file to 10 times more than the AVM 1. You can easily create your custom objects, inherit classes, extend sub-super classes, prototype your objects methods now in AS 3 ever than before.
So, ActionScript programmer will find ActionScript 3. It is a standard language used across the Adobe Flash platform. It works well on the standalone player of adobe i. Adobe Air, servers, and products. In future, you can expect that all the features, services and applications from the Adobe will use ActionScript 3. Adobe Flex is the big example for that. The subtle improvements have been unified with syntax writing. Now, new properties do not carry useless underscores, loading data dynamically and linking to an URL has made consistent changes in it.
This term means how all the contents in the flash file are organized in view of Flash Player as their depth and level. In ActionScript 3. Now, on the fly you can remove, add and replace child or sibling elements in Flash. Event architecture directly related with the consistency of the project. In this version of ActionScript, all the events are fielded by event listeners.
The new event model is quite strong than previous one, it allows mouse and keyboard event to propagate through multiple objects in the display list. Now dealing with XML is full of pleasure moment for anyone, than the formerly very unmanaged or cumbersome method. The one of the loveliest improvement in top level objects is in Text or String.
Now, you can calculate the index of the any letter in first line, last line and under the mouse letters. Calculate length of the specific line or paragraph. These improvements not only make working with the text easier, but also allow a tighter integration with the lines and characters in a filed and their surrounding stage elements.
Want to do form validation go for Regular Expressions. The days have gone when you used to depend on String Object to deal with string or text only.
The incarnation of the Regular Expressions is a boon to the text handling in ActionScript 3. Now ActionScript 3 provides a native support for regular expressions. Regular expressions allow us to manipulate text using wild cards, character types numeric, alpha, punctuation, and so on , white space spaces, tab, and returns , repeating characters, and more.
Improvement in Sound Object is one of the most eye catchiest improvements in ActionScript 3. Now, one can control individually or collectively all the sounds as per the need. You can also access amplitude and frequency spectrum data from sounds during playback to create a colorful equalizer on the bases of actual sound.
This option was not available before. Now, you can access raw binary data at runtime. There are some examples of the same; individual bytes of data can be accessed during download, during sound playback, and during bitmap data manipulation. The scope of accessing data, defining classes or objects, nesting movie clips, parenting symbols is not a big deal in ActionScript 3.
The scope will be automatically managed through this version. The great, great and great improvement in ActionScript 3. There are few big changes to define or write your classes than previous version. The inclusion of sealed classes and few namespaces are the examples among other things. I agree that there are many more features to be discussed. But I hope whatever is here, that would be very helpful to know the topic.
ActionScript started as a sequential programming language, and as the language developed it became a practical programming language. There were many advanced and new features in ActionScript 2. Apart from these features, there were two major improvements that came with ActionScript 2. This version has changed the way of scripting on Flash platform. Hence, ActionScript 3 is carrying nearly more than 5 times classes and 4 times packages than ActionScript 2. This analysis indicates a big difference between two.
Apart from the above theoretical explanation, I am giving some practical examples here. Please read carefully:. Because you are trying to store a Number in a variable which you specified was a String. The advantage of typing variables is that, in general, it makes your code a little easier to read, the player can run your code faster, and the compiler can find some errors when you compile your content.
Note: Unlike in ActionScript 2, in ActionScript 3 if you attempt to call the function without any arguments, you will get an error. Note: We specify the return type as void, which means that the function does not return a value. If you try to call the function in ActionScript 3 and pass it a Number instead of a String, you will get an error. Note: The Math.
In ActionScript 3, the root property refers to the main timeline of the SWF in which the content originates. In most cases, these will be the same in either version of ActionScript. Below is a close illustration of the difference between AS2. You can see how AS3. Note: Both examples use the following XML contained in a file called contacts. Note: in the above ActionScript 3 video example you will need two buttons and one video in the same directory where your swf file is stored.
Actionscript is a coding language that was developed by Adobe for use with Flash for creating animations and even simple games. As Flash evolved over the years, so did Actionscript. The latest improvement is the move from AS 2. Rather than simply trying to improve AS 2. The resulting software, though still very similar to AS 2.
Probably the most celebrated change in AS 3. The general perception is that AS 3. Although some may dispute these numbers, all are in agreement that AS 3.
Another change in AS 3. With AS 2. That is no longer possible in AS 3.
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