Javascript dynamically created functions in an object -

I'm just studying JavaScript and I had to face a problem related to scoping.

Here is the code

  function user (attribute) {for (in properties i) {(function () {this ['Receive' + i] = function () {Return Properties [i];};}) (); }} Var me = new user ({id: 54, name: 'oahu'}); Console.log (me.getName ()); Console.log (me.getId ());   
 How do I want to work it out? It has two functions:  getName  and  getId  related to   Object  
 How it works: It does two things as I want, but they are related to the  window   
:  
 
 
 I tried to remove the line from the function. 3. I do what I do, but now it returns  name  "ohau" twice, instead of returning  id  and  names    
 
 I tried to use the work from the  window , like the problem remains in the previous case - this is the  name  Gives twice.    
 Question: What am I doing and how do I work it, as I want?  
 Sorry for creating this post using a PS phone, for potential typo or formatting problems. Also, please forgive me your English skills.   
 
 
 Try to understand why the following code works:  
 < / P> 
 
 
    
 Valid use of this statement with  An example of one of these is   edit:  
 Let me explain the statement with  more concise than the use of an Implemented Function Expression (IIFE)  
  Edit:  If the  with  keyword is not correct, then you are not bad it has some legitimate uses:  
  
 
 The reason for this is that your code does not work, because each function has its own value  it . So when you call function expression within  loop for  loop, the value of  this  inside the function is no longer your new object; it's  window  To solve that problem, you can do something like this:  
  (function (i, self, support) {self ["receive" + i] = function () {return Prop [i];};} (I, this, attribute))   
 However using the  statement with the statement is clear and fast, it is fast because you have the function No call Are not.