在Jscript中定义类通过类声明, 包含方法和对象和var 声明。对于类的派生通过下面两个程序的对比，你讲清楚地明白。 JScript 5.5 Code // Simple object with no methods function Car(make, color, year) { this.make = make; this.color = color; this.year = year; } function Car.prototype.GetDescription() { return this.year + " " + this.color + " " + this.make; } // Create and use a new Car object var myCar = new Car("Accord", "Maroon", 1984); print(myCar.GetDescription()); JScript.NET Code // Wrap the function inside a class statement. class Car { var make : String; var color : String; var year : int; function Car(make, color, year) { this.make = make; this.color = color; this.year = year; } function GetDescription() { return this.year + " " + this.color + " " + this.make; } } var myCar = new Car("Accord", "Maroon", 1984); print(myCar.GetDescription()); Jscript.net还支持定义private和protected property通过GET和SET进行读写。 如下例： class Person { private var m_sName : String; private var m_iAge : int; function Person(name : String, age : int) { this.m_sName = name; this.m_iAge = age; } // Name 只读 function get Name() : String { return this.m_sName; } // Age 读写但是只能用SET function get Age() : int { return this.m_sAge; } function set Age(newAge : int) { if ((newAge >= 0) && (newAge <= 110)) this.m_iAge = newAge; else throw newAge + " is not a realistic age!"; } } var fred : Person = new Person("Fred", 25); print(fred.Name); print(fred.Age); // 这将产生一个编译错误，name是只读的。 fred.Name = "Paul"; // 这个将正常执行 fred.Age = 26; // 这将得到一个 run-time 错误, 值太大了 fred.Age =
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