flash_ actionscript3.0 (语句、关键字和指令)(5)

flash actionscript3.0组建使用

class C extends Class_d, Class_e // not OK

参数

className:Class — 类的完全限定名称。

示例

如何使用示例

下面的示例创建一个名为 Plant 的类。Plant 构造函数采用两个参数。

// Filename Plant.as

package {

public class Plant {

// Define property names and types

private var _leafType:String;

private var _bloomSeason:String;

// Following line is constructor

// because it has the same name as the class

public function Plant(param_leafType:String, param_bloomSeason:String) { // Assign passed values to properties when new Plant object is created _leafType = param_leafType;

_bloomSeason = param_bloomSeason;

}

// Create methods to return property values, because best practice // recommends against directly referencing a property of a class public function get leafType():String {

return _leafType;

}

public function get bloomSeason():String {

return _bloomSeason;

}

}

}

在脚本中，使用 new 运算符来创建一个 Plant 对象。

var pineTree:Plant = new Plant("Evergreen", "N/A");

// Confirm parameters were passed correctly

trace(pineTree.leafType);

trace(pineTree.bloomSeason);

另请参见 dynamic extends final internal public

const definition keyword