XMLList操作

xml = <vehicles>

<vehicle type=”car” color=”yellow”/>

<vehicle type=”truck” color=”gray”/>

<vehicle type=” truck” color=” gray”/>

<vehicle type=”car” color=”red”/>

<vehicle type=”car” color=”red”/>

<vehicle type=”car” color=”black”/>

</vehicles>;

[html] view plaincopyprint?

    <s:NavigatorContent xmlns:fx="http://ns.adobe.com/mxml/2009"  
         xmlns:s="library://ns.adobe.com/flex/spark"  
         xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300">  
     <s:layout>  
      <s:VerticalLayout paddingBottom="5" paddingLeft="5" paddingRight="5" paddingTop="5"/>  
     </s:layout>  
       
     <fx:Declarations>  
      <!-- 将非可视元素（例如服务、值对象）放在此处 -->  
     </fx:Declarations>  
     <fx:Script>  
      <![CDATA[ 
       import mx.controls.Alert; 
        
       [Bindable] 
       private var xml:XML = <root> 
        <r title="package1"/> 
        <r title="package2"/> 
       </root>; 
        
       [Bindable] 
       private var xmllist:XMLList = xml.children(); 
        
       private function appendToXML():void{ 
         
        var x:XML = new XML(<r title="diagram"/>); 
        x.@title = "package"+String(xml.children().length()); 
        xml.appendChild( x ); 
         
        xmltxt.text = xml.toXMLString(); 
        xmllisttext.text = xmllist.toXMLString(); 
       } 
        
       private function deleteXMLNode():void{ 
         
        var x:XML = xml.children()[0]; 
        if( !x ) return; 
         
        delete xml.children()[x.childIndex()]; 
         
        xmltxt.text = xml.toXMLString(); 
        xmllist = xml.children(); 
        xmllisttext.text = xmllist.toXMLString(); 
         
        xmltxt.text += "\n\n"+ x.toXMLString() +"has be deleted!"; 
       } 
        
       private function queryChild():void{ 
             queryResult.text = xml.children().(@title=="package2" || @title=="package3").toXMLString(); 
       } 
      ]]>  
     </fx:Script>   
     <s:HGroup verticalAlign="middle">  
      <s:Label text="XML contant"/>  
      <s:Button label="append to XML" click="appendToXML()"/>  
      <s:Button label="delete from 0" click="deleteXMLNode()"/>  
      <s:Button label="delAllChild" click="delete xml.*; xmltxt.text = xml.toXMLString();"/>  
      <s:Button label="queryChild" click="queryChild()"/>  
     </s:HGroup>  
       
     <s:TextArea text="{xml.toXMLString()}" id="xmltxt" width="500" height="100%"/>  
     <s:Label text="XMLList contant"/>  
     <s:TextArea text="{xmllist.toXMLString()}" id="xmllisttext" width="500" height="100%"/>  
     <s:Label text="QueryResult"/>  
     <s:TextArea id="queryResult" width="500" height="100%"/>   
    </s:NavigatorContent>