本文實例講述了JavaScript使用prototype原型實現的封裝繼承多態。分享給大家供大家參考，具體如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>www.49028c.com js基于原型prototype封裝繼承多態</title></head><body><script>function Person(name,age){ this.name=name; this.age=age;}Person.prototype.getName=function(){ return this.name;}Person.prototype.setName=function(name){ this.name=name;}Person.prototype.getAge=function(){ return this.age;}Person.prototype.setAge=function(age){ this.age=age;}//--------------------function Student(name,age,c){ this.name=name; this.age=age; this.c=c;}Student.prototype=new Person(this.name,this.age);//重點Student.prototype.getC=function(){ return this.c;}Student.prototype.setC=function(c){ this.c=c;}var a=new Person("小小",19);document.write(a.getName());//-----------------------------------------var b=new Student("大大",15,1);document.write(b.getName());</script></body></html>運行結果：
小小大大
希望本文所述對大家JavaScript程序設計有所幫助。
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