比如偶尔遇见比较讨厌的xml定义入下列方式
<select> <case id = "1" tip = "tip1..."> <case id = "2" tip = "tip2..."> <case id = "3" tip = "tip3..."> </select>
xml.case[0].@id
因此这样获取
var id : int = xml["case"][selectIndex].@id;