摘要： for...in循环中的迭代变量是对象中的键名（Flex中叫属性？）var mockData:Object={ID: 1,Say:"Hello",Name:"yuxuanji"};for (var entry:Object in mockData){trace(entry);}console output：IDSayName//结论：for 遍历的是keyfor each...in循环中的迭代变量... 阅读全文