pass argument to the parent class in javascript modular pattern -

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i have made 2 classes, person - parent class , student class - child class. trying implement inheritance. trying implement in modular pattern. not getting properly. code block please check below.

person.js

var person = function() {      var details, constructor, getdetailsbyattribute, setdetailsbyattribute, setdetails, getdetails, cleardetails;      cleardetails = function()   {         details = {             uid : '',             name : '',             email : ''         };     };      getdetailsbyattribute = function(attr)  {         return details[attr];     };      setdetailsbyattribute = function(key, value)    {         if(details.hasownproperty(key)) {             details[key] = value;         }else   {             console.log('invalid key');         }     };      setdetails = function(param)    {         cleardetails();         for(var attr in param)  {             if(details.hasownproperty(attr))    {                 details[attr] = param[attr];             }         }     };      getdetails = function() {         return details;     };      /**      * during object creation;      */     if(arguments.length >= 1)   {         //cleardetails();         setdetails(arguments[0]);     }      return {         getdetailsbyattribute : function(attr)  {             return getdetailsbyattribute(attr);         },          setdetailsbyattribute : function(key, value)    {             setdetailsbyattribute(key, value);         },          setdetails : function(params)   {             setdetails(params);         },          getdetails : function() {             return getdetails();         },          cleardetails : function()   {             cleardetails();         }     }; };

student.js

var student = function()    {     person.call(this,arguments); };  student.prototype = new person();

index.html

<html>     <head>     </head>     <body>         <script type="text/javascript" src="modules/person.js"></script>         <script type="text/javascript" src="modules/student.js"></script>         <script type="text/javascript">             var person1, person2, person3, student1;              person1 = new person({                 uid : 5225,                 name : 'jaison',                 email : 'jaison@jaison.com'             });              person2 = new person({                 uid : 5222,                 name : 'jatin',                 email : 'jatin@jatin.com'             });              person3 = new person();             person3.setdetails({                 uid : 5221,                 name : 'sarath',                 email : 'sarath@sarath.com'             });             person3.setdetailsbyattribute('name', 'sarath');              student1 = new student({                 uid : 5221,                 name : 'sachin',                 email : 'sachin@sachin.com'             });              console.log('person 1 : ',person1.getdetails());             console.log('person 2 : ',person2.getdetails());             console.log('person 3 : ',person3.getdetails());             console.log('student 1 : ',student1.getdetails());             //console.log(student1.get);          </script>     </body> </html>

try this:

var student = function()    {     return person.apply(this, arguments); };

without 

student.prototype = new person();

update: realize can use this:

var student = function()    {     this.setdetails.apply(this, arguments); }; student.prototype = new person();

so closure inside prototype, , setdetails access it.

in code when this:

student.prototype = new person();

you create closure , when call this

var student = function()    {     person.call(this,arguments); };

you create closure (and should not call apply, not work). execute constructor function , (if apply will) apply arguments different closure, , functions returned person detail inside closure discard. methods of student taken prototype not constructor.


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