JavaScript private members private and public member difference

Private
Private members are generated by constructors. The normal var variable and the constructor parameters are called private members.

The code is as follows	Copy Code
function Container (param) { This.member = param; var secret = 3; var that = this; }

The constructor creates 3 private instance variables: Param,secret and that. They are added to the object, but cannot be accessed externally, nor can they be the object's own
Public method Access. They can only be accessed by private methods. The private method is the internal method of a constructor.

Public
The members of the object are public members. Any object can be accessed, modified, deleted, or added to a new member. There are two main ways to place members in a new object:

In the constructor
This technique is commonly used to initialize public instance variables. The "This" variable of the constructor is used to add members to the object.

code is as follows

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Functin Container (param) {     this.member = param; } Functin Container (param) {     this.member = param; } //re-encapsulate Document Object var console={ Write:function (msg) {alert (msg); }; //person Object var person={ _name: "Zzl",//static public _age:28, Printinfo:function () {Console.Write ( "Name: +person._name+", Age: "+this._age";} Public method, this represents the person }; //People type (object) Var people= (function () { var _name= "Zzl";//private var _age=28; Return {//public Printinfo:function () {console.write (' name: ' +_name+ ', Age: ' +_age '); } } ()); Person.printinfo ()///Method in Object People.printinfo ()//Method object exposed child method Console.Write (person._name);//Properties in Object