JQuery: copy/clone element and increment index based on attribute

This snippet is for cloning #element and updating it's attributes if has a numeric index.

/**
 * jQuery plugin for copy/clone element and increment index 
 *
 * @version 0.1
 * @author hiryu85
 *
 * Usage:
 * $('input#article').copy().insertAfter( $('#destination') )
 *
 * Settings:
 * - attributes array Attribute to update
 * - copyEvents bool Clone events handler?
 *
 */
(function(jQuery) {
 jQuery.fn.copy = function (options) {
 var $self = this;
 var $_cloned = null;

 var _defaults = {
 attributes: ['id', 'name'],
 copyEvents: false,
 };
 var settings = jQuery.extend(_defaults, options);
 // Main
 var obj = $(this);
 $_cloned = jQuery(obj).clone(settings.copyEvents);
 var _childrens = $_cloned.find('*');
 jQuery.each(_childrens, function (i, e) {
 var _oldId = true;
 var _oldClass = false;
 $e = $(e);
 // Cerco indici nei seguenti attributi
 jQuery.each(settings.attributes, function (i, attrName) {
 try { // Incremento indice numerico +1
 var _content = $e.attr(attrName);
 if (_content.match(/\d+/)) {
 var _newContent = _content.replace(/\d+/i, function (index) {
 return parseInt(index) + 1
 });
 $e.attr(attrName, _newContent);
 }
 }catch(e){};
 });
 });
 // Chainable
 return $_cloned.each(function () {});
 }
})(jQuery);

#jquery

#index

#copy

#clone

#increment