用XML當做Dictionary的key值取出為undfined?

昨天在做Dictionary測試時本來用xml當做key mapping, 結果卻發現用迴圈將xml內資料重新取出return的值卻是undefined.

目前還在找原因為何:S

以下為示範code:

package { import flash.display.Sprite; import flash.utils.Dictionary; public class DictionaryKeyTest extends Sprite { public var data:XML = <root> <node label="node1" /> <node label="node2" /> <node label="node3" /> </root> public var nodes:Array = []; public var dict:Dictionary = new Dictionary(); public function DictionaryKeyTest() { //測試目的:用XML當做Dictionart key重新取出的值為undefined var key:*; for (var i:int = 0; i < data.*.length(); i++) { key = data.*[i]; nodes.push(key); dict[key] = "nodedata" + i; } for (i = 0; i < data.*.length(); i++) { key = data.*[i]; trace("isEqual:", key === nodes[i]); // return true trace(dict[key]); //return undefined trace(dict[nodes[i]]); //return value } } } }