JS public, private, static properties and methods

/*Static Methods/properties: can be used without instantiation, cannot be called through this, only through the object itself, that is, the object name user, the instance cannot call public method/property: Need to instantiate to use, static method cannot call*/         functionUser () { This. name= "Happy";//Public Properties             This. getname=function(){//Public Methods               return  This. Name; }            varAge//Private Properties            functionSetage () {//Private MethodsAge=1; }             This. getage=function(){//Privileged Methods               returnAge ; }} User.prototype.setName=function(){//Common Methods             This. name= "Happy Everyday"; } User.grade= "Junior High School";//Static PropertiesUser.grade=function(){//Static Methodsalert (User.grade); }         varo={//Static Class objectA:1, B:function(){            }         };

JS public, private, static properties and methods