js种继承题 _JavaScript

js类继承题
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.deng.testjs.model.Person"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
	<script type="text/javascript">

	/**
	        实现人、老师、学生之间的关系 并体现继承
	 */

	function test() {
	  var teacher = new Teacher();
	  alert("老师会说：" + teacher.say("同学们好"));
	
	  var student = new Student();
	  alert("学生会说：" + student.say("老师好"));
	 
	  alert("老师去学校的目的是：" + teacher.goSchool());
      alert("同学去学习的目的是：" + student.goSchool());
	}

	function Person() {
		this.say = function(content) {
			return content;
		}
	}

	function Teacher() {
	  this.goSchool = function(){
	      return "教书育人";
	  }
	

	}

	function Student() {
	   this.goSchool = function(){
	      return "学习知识，实现梦想";
	   }

	}
	
	Teacher.prototype = new Person();
	Student.prototype = new Person();
	
	
	
	
</script>
	
  </head>
  
  
  <body>
    This is my JSP page. <br>
    <input type="button" onclick="test()" value="test">
  </body>
</html>