jQuery: Plugin template

plugin.js

(function (factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(/*==@id==*/['jquery'], factory);
    } else {
        factory(jQuery);
    }
})(function ($) {

    var _defaults = { }
        
    function Plugin(elem, options) {
        if ( elem ) {
            this.init(elem, options); 
        } 
    }

    $.extend(Plugin.prototype, {
        name: "modal", 
        init: function(el, options) {
        	var self = this; 
        	$.data(el, this.name, this);
            this.settings = $.extend({}, $.fn[this.name].options, options);
            this.data = { elem: $(el) }; 
        },
        destroy: function() { }
        // other Plugin API methods
     });

    $.fn[Plugin.prototype.name] = function (options) {
        return this.each(function() {
            var plugin = $.data(this, Plugin.prototype.name);
            if (plugin) {
                if ( typeof options === 'string') {
                    plugin[options].apply(plugin, Array.prototype.slice.call( arguments, 1)); 
                }         
            }else {
                plugin = new Plugin(this, options); 
            }
        });
    };
    
    $.fn[Plugin.prototype.name].options = $.extend({}, _defaults);
});