jquery melaksanakan textarea sangat adaptif_jquery

jQuery.fn.extend({
               autoHeight: function(){
                  kembalikan ini.setiap(fungsi(){
                    var $this = jQuery(this);
Jika( !$this.attr('_initAdjustHeight') ){
$this.attr('_initAdjustHeight', $this.outerHeight());
                 }
                          _adjustH(this).on('input', function(){
                         _adjustH(ini);
                     });
                });
                     /**
*Tetapkan semula ketinggian
                        * @param {Object} elem
                                 */
fungsi _adjustH(elem){
                      var $obj = jQuery(elem);
                         return $obj.css({height: $obj.attr('_initAdjustHeight'), 'overflow-y': 'hidden'})
.height(elem.scrollHeight);
                }
            }
        });
//Gunakan
         $(function(){
               $('textarea').autoHeight();
        });