string的字段截取

btextfield=new TextField();
btextfield.setHtmlText("注：成爲<a href='event:link1?id=21'><font color='#0fe404'><u>黃金武狀元</u></font></a>格特爾")
btextfield.addEventListener(TextEvent.LINK ,traceGG);
 private function traceGG(e:TextEvent):void{
	var typeT:String = (e.text.split('?')[0]);
	var type2:String=(e.text.split('?')[1]);
	var type3:String=type2.split('=')[1]
	if( type3 == "21" ){
		WindowsContainer.getInstance().closeViewByName(winName);
	}
}