理工类毕业论文—英文文献翻译—ActionScript30概要.doc

D 科技译文 ActionScript 3:overview ActionScript 3.0 is a powerful object-oriented programming language that signifies an important evolution of the capabilities of the Flash Player runtime. The motivation driving ActionScript 3.0 is to create a language ideally suited for rapidly building rich Internet applications, which have become an essential part of the web experience. Earlier versions of ActionScript offered the power and flexibility required for creating truly engaging online experiences. ActionScript 3.0 now further advances the language, providing superb performance and ease of development to facilitate highly complex applications, large datasets and object-oriented, reusable code bases. With ActionScript 3.0, developers can achieve excellent productivity and performance with the content and applications that target Flash Player. ActionScript 3.0 is based on ECMAScript, the international standardized programming language for scripting. ActionScript 3.0 is compliant with the ECMAScript language specification. ActionScript is executed by the ActionScript Virtual Machine (AVM) built into the Flash Player. AVM1, the virtual machine used to execute legacy ActionScript code, powers Flash Player today and makes possible a wide range of interactive media and rich Internet applications. However, developers have started to push AVM1 to its limits – their project requirements now demand a major breakthrough. ActionScript 3.0 introduces a new highly-optimized ActionScript Virtual Machine, AVM2, which dramatically exceeds the performance possible with AVM1. As a result, ActionScript 3.0 code executes up to 10X faster than legacy ActionScript code. The new AVM2 virtual machine is available in Flash Player 9, and will be the primary virtual machine for ActionScript execution going forwards. The older AVM1 will continue to be supported by Flash Player for backwards compatibility with existing and legacy content. There are numerous products that generate content and applic