AS3 Delete child node from XML by child value

问题

I've got an XML with a structure like the following;

 <items>
    <item>5</item>
    <item>3006</item>
    <item>25</item>
    <item>458</item>
    <item>15</item>
    <item>78</item>
 </items>

How do I delete the item with the value 458. Just to clarify this, I don't know the index of that item, so simply calling delete items[index] won't do here. I have to delete by value.

Any hints?

回答1:

Using e4x filtering and the possibilities of using function inside the filter you can delete the node you want :

• xml.item.(text()==value) will give you the node your are looking for
• valueOf() will give you the current node you are filtering
• delete will delete the node

so combining these infos you can do :

var xml:XML=<items>
    <item>5</item>
    <item>3006</item>
    <item>25</item>
    <item>458</item>
    <item>15</item>
    <item>78</item>
 </items>;

 function deleteValue(xml:XML, value:String):void{
   xml.item.((text()==value) && (delete parent().children()[valueOf().childIndex()]));
 }

 deleteValue(xml, "458");

 trace(xml.toXMLString());

回答2:

this should solve it. Btw this will delete all direct chilren with name "item" that have value 458.

delete xml.(item == "458");

To delete recursively all children and subchildren that have name "item" and value 458 use:

delete xml..(item == "458");

来源：https://stackoverflow.com/questions/9682641/as3-delete-child-node-from-xml-by-child-value