Javascript OOP framework

我想知道下面的代码是否是定义在js中创建类的包装器函数的最佳方式。

有没有人愿意分享一个更好的例子，因为我认为这是第一次尝试。

如果有什么遗漏的话，我会错过什么？

j = {
    context : {}
};
j.namepsace = (function(){
    var createnamespace = function(parent, remainder){
        if(remainder.length === 0){
            return;
        }
        parent[remainder[0]] = parent[remainder[0]] || {};
        return createnamespace(parent[remainder[0]], remainder.splice(1));
    };
    return {
        define : function(ns){
            createnamespace(j.context, ns.split('.'));
        }
    }
}());
j.class = (function(){
    return {
        construct : function(namespace, name, ctor){
            namespace[name] = ctor;
        },
        ctor : function(namespace, name, ctor, prototype){
            for (var property in prototype) {
                if (prototype.hasOwnProperty(property)) {
                    ctor.prototype[property] = prototype[property];
                }
            }
            namespace[name] = ctor;
        }
    }
}());
j.mixin = (function(){
    return {
      with : function(object, objectliteral){
          for (var prototype in objectliteral) {
              if (objectliteral.hasOwnProperty(prototype)) {
                  object[prototype] = objectliteral[prototype];
              }
          }
      },
      toDefintion : function(classdefinition, mixin){
          var objectliteral =  mixin();
          for (var property in objectliteral) {
              if (objectliteral.hasOwnProperty(property)) {
                  classdefinition.prototype[property] = objectliteral[property];
              }
          }
      }
    };
}());
j.namepsace.define('application.section');
j.class.construct(j.context.application.section,'printNameMixin', function(){
    return {
        printName : function(){
            console.log(this.name);
        }
    };
});
j.class.construct(j.context.application.section,'person',function(name, address, age){
    return {
        name : name,
        address : address,
        age : age
    };
});
j.class.ctor(j.context.application.section,'customer',function(name){
    this.name = name;
}, {
    name : 'unregistered client'
});
j.mixin.toDefintion(j.context.application.section.customer, j.context.application.section.printNameMixin );
var person = j.context.application.section.person('Blair Davidson','23 Test St',33);
var cust = new j.context.application.section.customer("Bankwest");
cust.printName();
console.log(person);