MACROMEDIA FLASH MX, Справочник

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664 Chapter 2: ActionScript Language Reference
Book.prototype.addProperty("bookcount", Book.prototype.getQuantity,
Book.prototype.setQuantity);
Book.prototype.addProperty("bookname", Book.prototype.getTitle, null);
var myBook = new Book();
myBook.bookcount = 5;
trace("You ordered "+myBook.bo" copies of "+myBook.bookname);
The following example shows how to use the implicit getter and setter functions available in
ActionScript 2.0. For more information, see “Implicit getter/setter methods” in
Using ActionScript
in Flash .Rather than defining the
Book
function and editing
Book.prototype
, you define the
Book
class in an external file named Book.as. For more information, see “Creating and using
classes” in Using ActionScript in Flash . The following code must be in a separate external file
named Book.as that contains only this class definition and resides within the Flash application’s
classpath:
class Book {
var books:Number;
function set bookcount(numBooks:Number):Void {
this.books = numBooks;
}
function get bookcount():Number {
return this.books;
}
function get bookname():String {
return "Catcher in the Rye";
}
}
The following code can then be placed in a FLA file and will function the same way as it does in
the previous examples:
var myBook:Book = new Book();
myBook.bookcount = 5;
trace("You ordered "+myBook.bo" copies of "+myBook.bookname);