jquery的clone无法成功复制textarea和select

原址：http://stackoverflow.com/questions/742810/clone-isnt-cloning-select-values

https://github.com/spencertipping/jquery.fix.clone

(function (original) {
  jQuery.fn.clone = function () {
    var result           = original.apply(this, arguments),
        my_textareas     = this.find('textarea').add(this.filter('textarea')),
        result_textareas = result.find('textarea').add(result.filter('textarea')),
        my_selects       = this.find('select').add(this.filter('select')),
        result_selects   = result.find('select').add(result.filter('select'));

    for (var i = 0, l = my_textareas.length; i < l; ++i) $(result_textareas[i]).val($(my_textareas[i]).val());
    for (var i = 0, l = my_selects.length;   i < l; ++i) {
      for (var j = 0, m = my_selects[i].options.length; j < m; ++j) {
        if (my_selects[i].options[j].selected === true) {
          result_selects[i].options[j].selected = true;
        }
      }
    }
    return result;
  };
}) (jQuery.fn.clone);

直接在需要的页面引用这个js即可