MACROMEDIA FLEX 2-MIGRATING APPLICATIONS TO FLEX 2 Manuel d'utilisateur télécharger pdf (Page 40)

40 ActionScript 2.0 to 3.0

newstring2.prop = 1;

trace(newstring2.prop); // prints '1'

ActionScript 3.0:

newstring = new String("hello");

String.prototype.sayHi = function() {

trace("hi!");

}

newstring.sayHi();

newstring2 = "hello";

newstring2.prop = 1; // Warning, String is sealed...

String.prototype.prop = 1;

trace(newstring2.prop); // Output: 1

Working with keys

The Key class is now the Keyboard class.

doLater() method

The doLater() method on UIComponent has been removed. You now use callLater().

The

callLater() method takes a similar number of arguments. You no longer specify the

object on which the function to be called later is defined. In addition, because of stricter

typing, you must remove quotes from around the function if you used them; the type is

function and cannot be coerced from type String. For example:

Flex 1.5:

doLater(this, "moveText");

Flex 2:

callLater(moveText);

The callLater() method still takes an optional args argument. For more information, see

ActionScript 3.0 Language Reference.

LocalConnection

The LocalConnection.allowDomain() method specifies one or more domains that can send

LocalConnection calls to this LocalConnection instance. In previous versions of ActionScript,

the

allowDomain() method was a callback method that you implemented. In ActionScript

3.0,

allowDomain() is a built-in method of LocalConnection that you call. This makes the

allowDomain() method work in much the same way as the Security.allowDomain()

method.

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MACROMEDIA FLEX 2-MIGRATING APPLICATIONS TO FLEX 2 Manuel d'utilisateur Page 40