oo.js

<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script>


<script type="text/javascript">

  if( !Object.create){
		Object.create = function( o ){
			function actor() {}
			actor.prototype = o;
			return new actor();

		}
	}

	var Model = {

		prototype: {
			init: function() {
				console.log( "model....")
			}
		},

		create: function() {

			var obj = Object.create( this );
			obj.prototype = obj.fn = Object.create( this.prototype );
			obj.parent = this;
			return obj;
		},

		init: function() {

			var instance = Object.create( this.prototype ) ;
			instance.parent = this;
			instance.init.apply( instance, arguments );
			return instance;
		},

		extend: function( o ){
			$.extend( this, o);
		},

		include: function( o ) {
			$.extend( this.prototype, o );
		}
	}


	Model.extend({
		find: function() {
			console.log('find')
		}
	});

	Model.include({
		init: function() {
			console.log('instance');
		}

	});


	var User = Model.create();

	User.include({

		say: function(){
			console.log('user say....');
		},

		init: function() {

			console.log(' user init...')
		}
	});
	
	var user = User.init(),
		user2 = User.init();


	var Asset = Model.create(),
		asset = Asset.init();

</script>