jquery-plugin-boilerplate.js

;(function ( $, window, document, undefined ) {

    var pluginName = "defaultPluginName",
        defaults = {
            propertyName: "value"
        };

    function Plugin( element, options ) {
        this.element = element;
        
        this.options = $.extend( {}, defaults, options) ;
        
        this._defaults = defaults;
        this._name = pluginName;
        
        this.init();
    }

    Plugin.prototype.init = function () {
        // ...
    };

    $.fn[pluginName] = function ( options ) {
        return this.each(function () {
            if ( !$.data(this, "plugin_" + pluginName )) {
                $.data( this, "plugin_" + pluginName, 
                new Plugin( this, options ));
            }
        });
    }

})( jQuery, window, document );