ActionScript 3.0 :: Using Variables In Properties?
Jun 8, 2009
I'm trying to craft a simple image gallery with 6 thumbnails on the left and a large image container on the right. I've assigned a MOUSE_OVER listener that executes the following function when activated:
Code:
function viewLargeImage(evt:MouseEvent):void {
var imageName:String = evt.target.name + "_large";
this.mc_tabRight.imageName.visible = true;
}
The instance names of the thumbnails are img1, img2, and so on, and their larger counterparts are img1_large, img2_large, and so on. When the MOUSE_OVER occurs, the larger version becomes visible. The gallery is within a movie clip (mc_tabRight; a tab that pulls out from the right side).So in my mind, the second line of the function should make visible the instance passed from the variable in the first line based on the rollover. I tested the code using trace("imageName"); and it returned the correct instance name, but when executed and the thumbnails rolled-over, it returns this error: TypeError: Error #1010: A term is undefined and has no properties.
The larger images are all present on the stage when the function is called. I'm sure I'm making some fundamental error here,
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Apr 20, 2007
What I am trying to do is write a class that could function on the x axis, or y axis, so when an instance of the class is called, the axis is specified. For example:
Code:
Scroll:ScrollFunction = new ScrollFunction(_x, MC);
class ScrollFunction {
function ScrollFunction(axis, targetMC) {
[Code]....
That's a very simplified version, but you get the idea. This won't work though because although Flash recognizes 'axis' as being equal to '_x', it does not recognize 'axis' as a property.
All I want to know is if it is possible or not. I could, of course use an if statement, but that would mean I would have to have to write the function twice, once for each axis, which is what I want to avoid.
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Jun 14, 2011
This might be a very stupid question, but I have to ask it anyway. I am graduating in about a month and while studying, I have always been taught to use properties instead of public variables. So I started wondering what the advantage was and I must say that in some cases, I have no clue at all. Of course it is handy when some other logic needs to be executed when setting properties or getting properties, but is there any advantage to using properties when you are only getting/setting a variable? An example of what I mean is shown below (As3).
[Code]...
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Nov 7, 2011
I tried to execute the following actionscript3 program and I am surprised of the result of the call to f() function. I was expecting that the result of f() was "1" or at least "undefined" but the "0" value does not makes any sense for me. I will be pleased to have a good explanation of this behavior if you have one, or to know if you consider this behavior as "normal". I want to precise that I'm studying the behavior of Action Script programs in order to understand how the AVM2 really works and therefore I am not asking equivalent code to do the same thing. As a consequence if you have other tricky examples I am also interested.
[Cdoe]..
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I want to load Variables from a .txt-file to edit the properties of a movieClip. For example: 700 is written in the .txt-file. After loading the Clip the x-position of the clip should be set to 700. How can I do this?
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Mar 14, 2006
I am wrapping my brain around OOP in AS2. I am making two posts on two different subjects. My question here is: when should I use local instance variables, and when should I attach new properties to the instance object? (Feel free to correct my terminology.) Let's say I have a class for a scrolling background, which scrolls when I mouse over its edge. I want to put these values somewhere:
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2) How fast is the background scrolling now? I want to track this so I can smoothly change the scroll speed over several frames. This is often changed. Call this scrollSpeed.
It seems I have two ways I can store and access these values and darned if I know which is better practice. METHOD A: Make them local variables in the class, so the scrolling background instance has them as local vars. I set them up thusly:
[Code]....
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Here is the code that I thought of, even though it doesn't work
var a:Object = new Object();
a.bproperty = 0; //lowerlevel properties
a.cproperty = 1; // lowerlevel properties
[Code].....
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Code:
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{
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Code:
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[Code]....
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[Code]...
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