Javascript对象继承.doc

Javascript对象继承(原型继承法)Posted 周五, 01/15/2010 - 00:15 by admin原型继承可以说是Javascript提供的真正的继承方法,也是很多大牛推荐使用的方法,但我使用的最多的却不是这一个继承方法.原型继承是如何实现的,我们一起来看看下面的例子:view sourceprint?01.02.03.04.05.function dw(s) 06.document.write(s +);07.08./警察09.function PoliceMan() 10.var m_lifeEnergy = 100;11.this.getLifeEnergy =function () 12.return m_lifeEnergy;13.14.this.Shot =function () 15.m_lifeEnergy -= 1;16.17.this.Repair =function() 18.m_lifeEnergy += 1;19.20.21./超级警察22.function SuperPoliceMan() 23.this.Flight =function() 24. 25.26.27. 28.SuperPoliceMtotype =new PoliceMan();29. 30. 31./创建一个超级警察32.var pm =new SuperPoliceMan();33./显示当前生命值34.dw(pm.getLifeEnergy();35./中枪生命值减136.pm.Shot();37./显示当前生命值38.dw(pm.getLifeEnergy();39./飞离地面40.pm.Flight();41./自我修复42.pm.Repair();43./显示当前生命值44.dw(pm.getLifeEnergy();8. 49.50.查看运行结果请点击以下链接:/javascript/inherit_prototype.html作者：肥占Javascript对象继承(复制继承法)Posted 周四, 01/21/2010 - 23:35 by admin复制继承可以说是Javascript中我使用的最多的继承方法.复制继承是如何实现的,我们一起来看看下面的例子:view sourceprint?01.02. 03.04.05.06.07.function dw(s) 08.document.write(s +);09.10./一个一个复制父类的属性11.Ftotype.extendcopy =function(obj) 12.for(var eachin obj)13.totypeeach = objeach;14.15.16. 17./警察18.function PoliceMan() 19.var m_lifeEnergy = 100;20.this.getLifeEnergy =function () 21.return m_lifeEnergy;22.23.this.Shot =function () 24.m_lifeEnergy -= 1;25.26.this.Repair =function() 27.m_lifeEnergy += 1;28.29.30. 31./超级警察32.function SuperPoliceMan() 33.this.Flight =function() 34. 35.36.37./复制继承38.SuperPoliceMan.extendcopy(new PoliceMan();39. 40./创建一个超级警察41.var pm =new SuperPoliceMan();42./显示当前生命值43.dw(pm.getLifeEnergy();44./中枪生命值减145.pm.Shot();46./显示当前生命值47.dw(pm.getLifeEnergy();48./飞离地面49.pm.Flight();50./自我修复51.pm.Repair();52./显示当前生命值53.dw(pm.getLifeE