一.流程控制

 1package
 2{
 3    import flash.display.Sprite;
 4    
 5    public class Lesson2 extends Sprite
 6    {
 7        public function Lesson2()
 8        {
 9            /*
10             对于if-else、while、for、break、continue和switch和C#一样，这里就不多描述了
11              注意：ifelse ifelse建议把精确范围小的条件表达式放到最前面 
12             */
13             
14             //forin和for eachin 枚举集合中的元素(类似于C#的foreach)
15               var book:Object = {
16                                       bookName:"Flash系列教程",
17                                       author:"morningwang",
18                                       price:"$10"
19                                    };
20               for(var k in book)
21               {
22                       trace("成员名称(键):"+k+"\t"+"成员(值)："+book[k]);
23                       /*
24                           成员名称(键):bookName    成员(值)：Flash系列教程
25                        成员名称(键):price    成员(值)：$10
26                        成员名称(键):author    成员(值)：morningwang
27                       */
28               }
29               for each(var i in book)
30               {
31                       trace("成员：" + i);
32                       /*
33                           成员：Flash系列教程
34                        成员：$10
35                        成员：morningwang
36                       */
37               }                     
38        }
39    }
40}

二。函数介绍
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