var orchard = function (){    //基类型构造函数代理 静态方法都在代理函数上
        this.constructor && this.constructor.apply(this,arguments);
    };
    
    orchard.extend = function() {
        var parentObj = this;
        var parameters = parentObj.parameters ? 
                parentObj.parameters.concat(_.toArray(arguments)) : _.toArray(arguments);
        var thisObj = function(){     //继承类型构造函数代理
            var newparameters = parameters.concat(_.toArray(arguments));
            this.constructor && this.constructor.apply(this,newparameters);
        };
        _.extend(thisObj,parentObj);
        _.extend(thisObj.prototype,parentObj.prototype);
        thisObj.parameters = parameters;
        thisObj.base = thisObj.prototype.base = parentObj;    //基类型的代理函数
        thisObj.supper = thisObj.prototype.supper = parentObj.prototype;    //基类型的构造函数    类成员都在构造函数上
        return thisObj;
    };
    
    orchard.define = function(object){
        if(typeof object === "undefined") object = {constructor: function(){}};
        this.prototype = object.constructor;
        this.prototype.constructor = this.prototype;
        for(var name in this.base) 
            if(typeof this[name] === "undefined") 
                this[name] = this.base[name];
        for(var name in this.supper) 
            if(typeof this.prototype[name] === "undefined")
                this.prototype[name] = this.supper[name];
        for(var i = 0; i < arguments.length; i++) 
            _.extend(this.prototype,arguments[i]);
        this.prototype.base = this.base;
        this.prototype.supper = this.supper;
        this.supper = undefined;
        delete this.supper;
        return this;
    };
    
    orchard.definenew = function(){
        var newclass = this.extend();
        return define.apply(newclass,arguments);
    };
    

调用：

var Person = orchard.definenew({
    constructor: function(name){
        this.name = name;
    },
    say: function(){ return "Hello, i'm " + name;}
});

var aBen = Person.extend("aBen");
aBen.define({
    constructor: function(){
        this.supper.apply(this,arguments);
    }
});

var aben = new aBen();
alert(aben.say());

思路就是这样的，代码没验证过。分享的思路，大家自己看着办。哈哈~~