ActionScript 3.0 Cookbook by Joey Lott, Darron Schall, Keith Peters

By Joey Lott, Darron Schall, Keith Peters

Good earlier than Ajax and Microsoft's home windows Presentation starting place hit the scene, Macromedia provided the 1st strategy for development web content with the responsiveness and performance of laptop courses with its Flash-based "Rich net Applications". Now, new proprietor Adobe is taking Flash and its robust services past the net and making it a full-fledged improvement atmosphere. instead of specialise in idea, the ActionScript 3.0 Cookbook concentrates at the sensible software of ActionScript, with greater than three hundred ideas you should use to unravel a variety of universal coding dilemmas. you can find recipes that express you ways to:Detect the user's Flash participant model or their working systemBuild customized classesFormat dates and forex typesWork with stringsBuild consumer interface componentsWork with audio and videoMake distant process calls utilizing Flash Remoting and net servicesLoad, ship, and seek XML dataAnd a lot, even more ...Each code recipe offers the matter, answer, and dialogue of ways you should use it in alternative ways or customize it in your personal wishes, and why it really works. you could quick find the recipe that the majority heavily suits your state of affairs and get the answer with no studying the total e-book to appreciate the underlying code. suggestions development from brief recipes for small difficulties to extra advanced scripts for thornier riddles, and the discussions supply a deeper research for resolving comparable matters sooner or later, in addition to attainable layout offerings and ramifications. you are going to even how you can hyperlink modular ActionScript items jointly to create rock-solid ideas for Flex 2 and Flash applications.When you are not certain how ActionScript 3.0 works or the right way to process a particular programming limitation, you could easily choose up the booklet, turn to the proper recipe(s), and speedy find the answer you are looking for.

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Although you can use the ActionScript knowledge you learn from here in Flex applications you write, this book concentrates on ActionScript projects exclusively. Now, if you are familiar with Flash 8 or earlier versions of the Flash IDE, you may be a bit baffled the first time you open up Flex Builder 2. There is no timeline, no library, no drawing tools or color pickers. You'll be doing pretty much everything by code alone, which is why it is called an ActionScript project, rather than a 34 35 Flash project.

The logical NOT operator is often used to check if something is false instead of true: // // // if Check to see if a sprite is invisible (not visible). If so, display a message. visible == false. visible) { trace("The sprite is invisible. "); } The logical NOT operator is often used in compound conditions along with the logical OR operator: // // // if Check to see if the name is neither Bruce nor Joey. "); } ActionScript doesn't bother to evaluate the second half of a logical AND statement unless the first half of the expression is true.

In an assignment statementany statement using the assignment operator (an equals sign )the expression to the right of the equals sign is evaluated and the result is stored in the variable or property on the left side. Therefore, you can modify the value of a variable in an expression on the right side of the equation and assign that new value to the very same variable on the left side of the equation. Although the following may look strange to those who remember basic algebra, it is very common for a variable to be set equal to itself plus some number: 46 47 // Add 6 to the current value of quantity, and assign that new // value back to quantity.

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