jQuery Plugin boilerplate

jquery.plugin.js

;(function($, window, document, undefined) {
    "use strict";

    // Default options
    var pluginName = "pluginName",          //plugin name that will be use in $(element).pluginName
        defaults = {
            // Options
            // Events
        };

    function MyPlugin(element, options) {
        this.element = element;             // The element in $(element).pluginName()
        this.settings = $.extend({}, defaults, options);
        this._defaults = defaults;
        this._name = pluginName;
        this.init();
    }
    
    // Methods
    $.extend(MyPlugin.prototype, {
        init: function() {
            
        }
    });

    $.fn[pluginName] = function(options) {
        var args = Array.prototype.slice.call(arguments, 1);
        return this.each(function() {
            if (typeof(options) === "string") {
                if (!$.data(this, "plugin_" + pluginName)) {
                    $.error("Initialize container before invoke methods");
                } else {
                    var plugin = $.data(this, "plugin_" + pluginName);
                    if (options[0] !== '_' && plugin[options] && typeof(plugin[options]) === 'function'){
                        // Not allow to call private method that start with _
                        plugin[options].apply(plugin, args);
                    } else {
                        $.error('Method "' +  options + '" does not exist on jQuery.' + pluginName);
                    }
                }
            } else {
                if (!$.data(this, "plugin_" + pluginName)) {
                    $.data(this, "plugin_" + pluginName, new MyPlugin(this, options));
                }
            }
        });
    };

})(jQuery, window, document);