jquery插件开发之实现google+圈子选择功能

            },
            //键盘按下 — 捕获键盘值，以执行对应事件
            /*
            8  – delete;
            27 – esc;
            38 – up;
            40 – down;
            9  – tab;
            13 – enter
             */
            ‘keydown’:function(e){
                switch (e.keyCode) {
                    case 8:
                        if($.trim(input.val())==”){
                            e.preventDefault();
                            var last=chose.find(‘.’+iset.removeEl+’:last’);
                            if(last.size()>0){
                                Action.undock(last);
                            }
                        }
                        break;
                    case 27:
                        e.preventDefault();
                        Action.hide();