Anything you need:
// jQuery Plugin Boilerplate // A boilerplate for jumpstarting jQuery plugins development // version 1.1, May 14th, 2011 // by Stefan Gabos // remember to change every instance of "pluginName" to the name of your plugin! (function($) { // here we go! $.pluginName = function(element, options) { // plugin default options // this is private property and is accessible only from inside the plugin var defaults = { foo: 'bar', // if your plugin is event-driven, you may provide callback capabilities for its events. // execute these functions before or after events of your plugin, so that users may customize // those particular events without changing the plugin code onFoo: function() {} } // to avoid confusions, use "plugin" to reference the current instance of the object var plugin = this; // this will hold the merged default, and user-provided options // plugin properties will be available through this object like: // plugin.settings.propertyName from inside the plugin or // element.data('pluginName').settings.propertyName from outside the plugin, where "element" is the // element the plugin is attached to; plugin.settings = {} var $element = $(element), // reference to the jQuery version of DOM element the plugin is attached to element = element; // reference to the actual DOM element // the "constructor" method that gets called when the object is created plugin.init = function() { // the plugin final properties are the merged default and user-provided options (if any) plugin.settings = $.extend({}, defaults, options); // code goes here } // public methods // these methods can be called like: // plugin.methodName(arg1, arg2, ... argn) from inside the plugin or // element.data('pluginName').publicMethod(arg1, arg2, ... argn) from outside the plugin, where "element" // is the element the plugin is attached to; // a public method. for demonstration purposes only - remove it! plugin.foo_public_method = function() { // code goes here } // private methods // these methods can be called only from inside the plugin like: // methodName(arg1, arg2, ... argn) // a private method. for demonstration purposes only - remove it! var foo_private_method = function() { // code goes here } // fire up the plugin! // call the "constructor" method plugin.init(); } // add the plugin to the jQuery.fn object $.fn.pluginName = function(options) { // iterate through the DOM elements we are attaching the plugin to return this.each(function() { // if plugin has not already been attached to the element if (undefined == $(this).data('pluginName')) { // create a new instance of the plugin // pass the DOM element and the user-provided options as arguments var plugin = new $.pluginName(this, options); // in the jQuery version of the element // store a reference to the plugin object // you can later access the plugin and its methods and properties like // element.data('pluginName').publicMethod(arg1, arg2, ... argn) or // element.data('pluginName').settings.propertyName $(this).data('pluginName', plugin); } }); } })(jQuery);
Source: http://stefangabos.ro/jquery/jquery-plugin-boilerplate-revisited/