我不能讓我的原型在我的構造函數中做出反應

Question

我有三個構造函數。學校，教師和學生。 到目前爲止，我的代碼中的所有內容都感覺很好，但我似乎無法在teacher.prototype中獲得兩個函數來響應。我是新來的js，我試圖瞭解爲什麼這是不響應

//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

在那些類構造函數繼承原型，你需要給你打電話是繼承什麼樣的構造，在當前對象的上下文。

例如在您的學生構造你需要做的這個

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 
} 

這就要求老師構造並初始化所有被繼承從老師的成員變量。

這是teacher從school

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

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

也繼承了同樣的，堅持使用慣例，使用大寫爲你的類名

function student() 

應該

function Student() 

所有這就是說，你有其他的架構師奇怪的是 - 學生是否應該像老師一樣繼承所有相同的方法？教師是否應該像學校一樣繼承所有相同的屬性/方法？當您從學生構造函數調用教師構造函數時，admin和name的默認參數應該是什麼？