xml replace whitespace example for stackoverflow

/**
 * Copyright www0z0k ( http://wonderfl.net/user/www0z0k )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/naqG
 */

package  {
    /**
     * ...
     * @author www0z0k
     */
    import flash.text.TextField;
    import flash.display.Sprite;
    import flash.text.TextFieldAutoSize;
    public class FlashTest extends Sprite {
        private var tf:TextField;
        private var targetNodeName: String = 'w';
        private var toReplace: String = ' ';
        private var replaceWith:String = '%SPACE%';
        public function FlashTest() {
            tf = new TextField();
            addChild(tf);
            tf.multiline = true;
            tf.autoSize = TextFieldAutoSize.LEFT;
            var srcStr:String = '<?xml version="1.0" encoding="utf-8" ?>\n<data>\n' + 
                                '    <w> </w>\n' + 
                                '    <w> Test</w>\n' + 
                                '    <w>Test </w>\n' + 
                                '    <oneMoreNode>\n' + 
                                '        <w> </w>\n' + 
                                '        <w> ololo </w>\n' + 
                                '        <w>ololo </w>\n' +         
                                '    </oneMoreNode>\n' + 
                                '</data>';
            
            XML.ignoreWhitespace = false;
            XML.prettyPrinting = false;
            
            var xml:XML = new XML(srcStr);        
            tf.appendText('raw xml:\n' + xml);
            for (var i:int = 0; i < /*xml..w*/xml.descendants(targetNodeName).length(); i++ ) {
                while((/*xml..w*/xml.descendants(targetNodeName)[i] + '').indexOf(toReplace) != -1){
                    /*xml..w*/xml.descendants(targetNodeName)[i] = (/*xml..w*/xml.descendants(targetNodeName)[i] + '').replace(toReplace, replaceWith);
                }
            }
            tf.appendText('\n\nmodofied xml:\n' + xml);
        }
    }
}