How to manipulate XML?

Question

Hi guys
I have this XML returned to my app:
<menu>
<categoria nome="cat1">
<item>item 1</item>
<item>item 2</item>
<item>item 3</item>
</categoria>
<categoria nome="cat2">
<item>item 1b</item>
<item>item 2b</item>
<item>item 3b</item>
</categoria>
<categoria nome="cat3">
<item>item 1c</item>
<item>item 2c</item>
<item>item 3c</item>
</categoria>
</menu>
this is retrieved by an HTTPService
<mx:HTTPService id="xmlMenu" url="data/menu.xml"
method="POST" useProxy="false" result="handler()"
resultFormat="e4x" />
How to manipulate the XML data in then result handler using
action script?
- show nodes length
- get the atribute of node categoria
- get to the values of node item
i've tried
xmlMenu.lastResult.menu.length.toString()
xmlMenu.lastResult.menu.categoria[0].length.toString()
xmlMenu.lastResult.menu.categoria[0].@nome
xmlMenu.lastResult.menu.categoria[0].item[0]
nothing happens

Answer 1

A better way to get the result is:
<mx:HTTPService ..result="handler(event)"
and in the handler:
private function handler(oEvent:ResultEvent):void //might
need to import ResultEvent
var xmlMenu:XML = oEvent.result;
trace(xmlMenu.toXMLString())
Now you can use the e4x expressions;
trace(xmlMenu.categoria[0].item[0]); //ashould trace "item 1"
Tracy