天生我才必有用

1. as3ebaylib is a library for accessing eBay’s XML API through ActionScript.
2. as3corelib is a collection of classes and utilities that make ActionScript development easier.
3. as3flexunitlib is a unit testing framework for Flex development.
4. as3odeolib is an ActionScript library for retrieving podcasts from the Odeo service.
5. as3youtubelib is a library for accessing the YouTube data API.
6. as3syndicationlib provides a single interface for dealing with RSS and Atom feeds.
7. as3flickrlib is a library for consuming the Flickr API.
8. as3mapprlib provides access to the Mappr API that combines Flickr and geo-tagged information.
9. Cairngorm is a framework for developing Flex-based rich Internet applications.

1. 包含两个字符串的数组

• [”boy”, “girl”]

2. 数组中可以包含任意类型的数据，如字符串和数字等，设置可以包含另一个数组类型的数据

• [”boy”, 1 , “girl” , 2]

• [”month end days”, [31, 30, 28]]

3. 可以把数组赋值给一个数组变量

• var game:Array = [”EA”, 175];

4. 使用new来创建数组变量

• new Array(14) // 创建包含14个空数据的数组。
• new Array(”sun”, “moon”, “earth”) //创建了包含3个字符串的数组，等同于[”sun”,”month”,”earth”]。

5. 访问数组元素 []

var trees:Array = [”birch”, “maple”, “oak”, “cedar”];

var firstTree:String = trees[0];

trees[0] = “oak2″;

6. 取得数组长度length

var trees:Array = [”birch”, “maple”, “oak”, “cedar”];

var len:int = trees.length;

7. 往数组中添加元素

• var fruits:Array = [”apples”, “oranges”, “pears”]; fruits[3] = “tangerines”;
• var colors = [”green”, “red”, “blue”];  colors.length = 50;
• push( )方法，把新的元素添加到数组尾部。
• unshift( )方法，把新的元素添加数组首部。
• splice( )方法
• concat( )方法

8. 从数组中删除元素

• delete 操作符：var list = [”a”, “b”, “c”]; delete list[2];
• var toppings:Array = [”pepperoni”, “tomatoes”, “cheese”]; toppings.length = 2;
• splice( )
• pop( ) ：和push( )相反。
• shift( )：和unshift( )相反。

1. 坐标 x, y

ball.x =3
ball.y = 4

2. 宽和高

ball.height = 100
ball.weight = 200

3.宽高比例

ball.scaleX = 2
ball.scaleY = 0.5

按比例宽扩大2倍，高缩小一半。

4. 透明度

ball.alpha = 0.5

alpha 可以0-1中任意数值，数值越小透明度越高

5.旋转

ball.rotation = 45

旋转45度

6.numChildren
取得子控件的总数

7.z-index

getChildIndex(ball1) //取得ball1子控件的z-index位置
setChildIndex(ball1, numChildren-1); //把ball1子控件放到当前控件的最前面(top)
swapChildren(ball2, ball3); //交换ball2和ball3的z-index位置
swapChildrenAt(0, 2); //交换z-index位置0和2上的子控件