ActionScripting in Flash

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Insert quiz. Quiz settings. CPresentationLoader Class. IAnimationStep Interface. ICompanyInfo Interface. ICompanyLogo Interface. IPlaybackListener Interface. IPlayer Interface. IPlayerListener Interface. IPresentationInfo Interface.

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IPresenterInfo Interface. IPresenterPhoto Interface.

Flash Actionscript Tutorials - gotoAndStop & gotoAndPlay functions - 2

IReferenceInfo Interface. IReferencesCollection Interface. ISlideInfo Interface. ISlidesCollection Interface.

Learning ActionScript 3

ISlideThumbnail Interface. ISoundController Interface. ISoundListener Interface. IThumbnailsCollection Interface. ActionScript 3 and Flex 2 support. AnimationStep Class. AnimationSteps Class. BridgeEvent Class. BridgeLoader Class. PlaybackController Class. Player Class.

PresentationContainer Class. PresentationInfo Class. PresenterInfo Class. ReferenceInfo Class. ReferencesCollection Class. SlideInfo Class. SlidesCollection Class. Skin Development Reference. ISkin Interface. ISkinListener Interface. ISlideShowWindow Interface. IHyperlinksManager Interface. IPlaybackController Interface. ISlideController Interface. About iSpring Solutions.

Write ActionScript in Flash

Download PDF. ActionScript 3. Integration with Flex applications iSpring generated presentations can be easily integrated with Flex applications using ispring. Being that they are based on the Number type, however, you'll notice that they're type identities "int" and "uint" are not capitalized. This indicates that there is no specific object type or class definition associated with that type. There is one other type that is also not capitalized. This is the special void type. This was capitalized in ActionScript 2 but is no longer in ActionScript 3 since, like with int and uint, there is no specific definition associated with it.

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This type has not been seen so far as it only applies to functions. Also new to ActionScript 3 is the behavior of the delete keyword. The delete keyword is used to delete variables from an object. Variables defined with var , however, cannot be deleted in ActionScript 3. Only dynamic variables defined within dynamic objects can be deleted with delete. For other variables, the equivalent of deleting would be to set those variables to have a value of null. As seen above, not all variables can have null values. Variables defined as int, uint, and Number, can only have numeric values Number also being able to have a value of NaN which does not include null - the same applying to Boolean values which can be either true or false.

For such cases, there is no equivalent to delete. Variables typed as Number could be set to NaN , but int and uint variables have to be numeric at all times and Booleans just either true or false. Functions define reusable chunks of code, or custom operations in ActionScript. By creating a function you can perform the same operation multiple times without having to write the same code over again for each time you want to use it. Instead, all you do is call the function using its function name. There are two ways to define functions in ActionScript.

Named functions create function or method definitions while anonymous functions keep variables which reference a "free floating" function definition. The above examples create a function with the name doubleNumber which accepts a single number value and returns that value multiplied by two.

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To use the function, you call it using parentheses. As with variables, named functions cannot be defined more than once for any one given timeline in ActionScript 3. Anonymous functions can reference multiple functions over time, but cannot be redefined with var as they are essentially variables. ActionScript 2 allowed you to change any function's definition anytime. In ActionScript 3, you can only change an anonymous function's definition. When assigning type to functions, define typing information for both the parameter list the comma separated list of values you can supply the function as well as the return value, or the value that the function supplies after it's executed.

When using an anonymous function definition, the variable the function is being assigned to would also be typed to Function. If a function does not return a value, then its return type should be void. When a function typed as void is executed, or simply fails to return a value with the return statement, its return value becomes undefined.

The returnsNothing function above not only returns nothing, but also accepts no values — it has no parameter list. If you try to pass values into the function when it has no parameter list defined for it in ActionScript 3, you will get an error. In ActionScript 2, the Void type was used as the parameter list in a function definition to indicate no parameters. In ActionScript 3, you just leave the list empty. Using Void in the parameter list in ActionScript 3 will actually make Flash think that a variable named Void is defined for the parameter list of that function. The difference between parameters and arguments is that parameters are the value used to define the function.

Arguments are the actual values provided to the function during use. You can see arguments as being parameter values. By using defaults you not only get to specify values for parameters not used by the function caller, but it also lets you define functions with optional parameters, or parameters that aren't required to be used.

Those parameters that do not have default values must be provided when the function is called in ActionScript 3.

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Because of this, all optional parameters must be defined at the end of a parameter list. You cannot have a required parameter defined after an optional. What if you wanted to allow a function to be called with any number of arguments? In ActionScript 2, you could do this simply by omitting any parameter list and referencing the arguments using the arguments object in the function. In ActionScript 3, having no parameter list means the function cannot be called with any arguments. Instead, you have to use a new parameter type known as … rest.

This parameter goes at the end of your parameter list or it can represent your entire parameter list and indicates that any number of arguments can be used when calling the function.

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