Actionscript 3 XML Weirdness
Weird. Have just been working on a project in AS3, and have been scratching my head over a blank trace from what (as far as I could see) should be a simple XML lookup.
Direct link to SWF
An example of the XML im using :
<pictures>
<img src="example.jpg" />
</pictures>
The ActionScript :
function BuildImageList(vXML:XML):void{
trace(vXML.pictures.img);
}
As far as I was aware, this should output <img src=”example.jpg” />, but it doesn’t - it just outputs blank. However, if I change the XML file and add a second <img /> node :
<pictures>
<img src="example.jpg" />
<img src="example.jpg" />
</pictures>
… it works :|. As expected, it traces 2 <img /> nodes. Is this a bug, or am I missing something?
Kirupa wrote...
Jul 12 2007
Hey dan!
It isn’t a bug at all….it’s a feature! In AS3, a collection of data such as your two img nodes is treated as an XMLList, but a single chunk of data such as your single img node is treated as an XML object.
You can get more info on it here:
livedocs.adobe.com/flex/2/langref/XMLList.html
and
kirupa.com/forum/showpost.php?p=1936562&postcount=167
This does seem a bit more complex than the lowly XML functionality found in AS2
Cheers!
Kirupa
dan wrote...
Jul 12 2007
Good to know, thanks Kirupa
I’ll have a read of your post, to clarify.
Kirupa wrote...
Jul 12 2007
Oh, it looks like I forgot to fully answer your post. To see the missing value, you’ll have to explicitly add a toXMLString as in:
trace(vXML.pictures.img.toXMLString());
=)
dan wrote...
Jul 13 2007
Cool, cheers.
Yeah I was scratching my head for a while - cause the data was still getting passed, it was just not tracing out. Crisis over