我不能让我的原型在我的构造函数中做出反应

Question

我有三个构造函数。学校，教师和学生。 到目前为止，我的代码中的所有内容都感觉很好，但我似乎无法在teacher.prototype中获得两个函数来响应。我是新来的js，我试图了解为什么这是不响应

//create a constructor for a school that has all teachers and students 
function school(principal,teacher,student,classroom,detention){ 
    this.principal = principal, 
    this.teacher = teacher, 
    this.student = student; 
    this.classroom = [], 
    this.detention = [] 
} 
//create a constructor for teachers and students 
//link them all together 
function teacher(admin,name){ 
    this.admin = admin 
    this.name = name 
    admin = true 
//inherit some of the properties of school 

} 
function student(fname,lname,year,average){ 
    this.fname = fname, 
    this.lname = lname, 
    this.year = year, 
    this.average = average 
} 
teacher.prototype = Object.create(school.prototype); 
//teacher can send students to class 
teacher.prototype.learn = function(student){ 
    this.classroom.unshift(student) 
} 
//be able to move students to detention 
teacher.prototype.punish = function(student){ 
    this.detention.unshift(student) 
} 


student.prototype = Object.create(teacher.prototype) 
student.prototype.fullDetails = function(){ 
    return this.fname + ' ' + this.lname + " is in " + this.year + 'th' + ' grade and his average is ' + this.average; 
} 


var mr_feeney = new teacher(true,"Mr.Feeney") 
var corey = new student("corey","mathews",10,88) 
var shaun = new student("shaun","hunter",10,43) 
var top = new student("topanga","lawrence",10,43) 

shaun.learn(); 

Answer 1

在那些类构造函数继承原型，你需要给你打电话是继承什么样的构造，在当前对象的上下文。

例如在您的学生构造你需要做的这个

function student(fname,lname,year,average){ 
    //initialize all the member variables on this object that are created in the teacher constructor by calling teacher.call(this) 
    teacher.call(this); 

    this.fname = fname, 
    this.lname = lname, 
    this.year = year, 
    this.average = average 
} 

这就要求老师构造并初始化所有被继承从老师的成员变量。

这是teacher从school

function teacher(admin,name){ 
    school.call(this); 
    this.admin = admin 
    this.name = name 
    admin = true 
} 

teacher.prototype = Object.create(school.prototype); 

也继承了同样的，坚持使用惯例，使用大写为你的类名

function student() 

应该

function Student() 

所有这就是说，你有其他的架构师奇怪的是 - 学生是否应该像老师一样继承所有相同的方法？教师是否应该像学校一样继承所有相同的属性/方法？当您从学生构造函数调用教师构造函数时，admin和name的默认参数应该是什么？