jQuery Plugin snippet

jquery.plugin.js

(function($){

    function Demo(props, settings)
    {
        this.demo = null;

        if (typeof props == 'object')
        {
            settings = props;
        }

        this.options = $.extend({}, $.fn.demo.defaultSettings, settings || {});
    }

    Demo.prototype =
    {
        init: function(){
        }
    };

    $.fn.demo = function(props, settings){
        return this.each(function(){
            var demo = new Demo(props, settings);
            if (!this.el)
            {
                this.el = $(this);

                demo.init();

                this.el.data('demo', demo);
            }
        });
    };

    $.fn.demo.defaultSettings =
    {
        d: 0,
        f: function () {
        }
    };
})(jQuery);