Use a global variable to save the last opened object
School Information advanced education enrollment information the latest lecture school activity 1 currency conversion, shows that this program simply put elements in the following directory, the interface required for the example of coin conversion application, including some UI component instances (Button, ComboB currency conversion, shows the program component instance (Button, ComboB currency conversion, it is displayed that the sub-program simply places the elements in the following directory, and the interface required to create a coin conversion application, including some UI component instances (buttons, ComboBox, Label, textArea, and TextInput ). In this application, the user must enter a number of Canadian dollar sub-simply put the elements in the following directory, in the example of the coin conversion application component instance (Button, the ComboB currency conversion shows that the sub-program simply places the elements in the following directory and the interface required to create the coin conversion application, including some UI component instances (buttons, comboBox, Label, TextArea, and TextInput ). In this application, you must enter a number of Canadian Dollar (Button, ComboBox, Label, TextArea, and TextInput ). In this application, the user must enter a number of Canadian dollar, 2 currency conversion, shows that the program child simply put the elements in the following directory, the interface required for the example of coin conversion application, including some UI component instances (Button, ComboB currency conversion, shows the program component instance (Button, ComboB currency conversion, it is displayed that the sub-program simply places the elements in the following directory, and the interface required to create a coin conversion application, including some UI component instances (buttons, ComboBox, Label, textArea, and TextInput ). In this application, the user must enter a number of Canadian dollar sub-simply put the elements in the following directory, in the example of the coin conversion application component instance (Button, the ComboB currency conversion shows that the sub-program simply places the elements in the following directory and the interface required to create the coin conversion application, including some UI component instances (buttons, comboBox, Label, TextArea, and TextInput ). In this application, you must enter a number of Canadian Dollar (Button, ComboBox, Label, TextArea, and TextInput ). In this application, the user must enter a number of Canadian dollar, 3 currency conversion, shows that the program child simply put the elements in the following directory, the interface required for the example of coin conversion application, including some UI component instances (Button, ComboB currency conversion, shows the program component instance (Button, ComboB currency conversion, it is displayed that the sub-program simply places the elements in the following directory, and the interface required to create a coin conversion application, including some UI component instances (buttons, ComboBox, Label, textArea, and TextInput ). In this application, the user must enter a number of Canadian dollar sub-simply put the elements in the following directory, in the example of the coin conversion application component instance (Button, the ComboB currency conversion shows that the sub-program simply places the elements in the following directory and the interface required to create the coin conversion application, including some UI component instances (buttons, comboBox, Label, TextArea, and TextInput ). In this application, you must enter a number of Canadian Dollar (Button, ComboBox, Label, TextArea, and TextInput ). In this application, the user must enter a number of Canadian dollar, 4 currency conversion, shows that the program child simply put the elements in the following directory, the interface required for the example of coin conversion application, including some UI component instances (Button, ComboB currency conversion, shows the program component instance (Button, ComboB currency conversion, it is displayed that the sub-program simply places the elements in the following directory, and the interface required to create a coin conversion application, including some UI component instances (buttons, ComboBox, Label, textArea, and TextInput ). In this application, the user must enter a number of Canadian dollar sub-simply put the elements in the following directory, in the example of the coin conversion application component instance (Button, the ComboB currency conversion shows that the sub-program simply places the elements in the following directory and the interface required to create the coin conversion application, including some UI component instances (buttons, comboBox, Label, TextArea, and TextInput ). In this application, you must enter a number of Canadian Dollar (Button, ComboBox, Label, TextArea, and TextInput ). In this application, the user must enter a number of Canadian dollar, 5 currency conversion, shows that the program child simply put the elements in the following directory, the interface required for the example of coin conversion application, including some UI component instances (Button, ComboB currency conversion, shows the program component instance (Button, ComboB currency conversion, it is displayed that the sub-program simply places the elements in the following directory, and the interface required to create a coin conversion application, including some UI component instances (buttons, ComboBox, Label, textArea, and TextInput ). In this application, the user must enter a number of Canadian dollar sub-simply put the elements in the following directory, in the example of the coin conversion application component instance (Button, the ComboB currency conversion shows that the sub-program simply places the elements in the following directory and the interface required to create the coin conversion application, including some UI component instances (buttons, comboBox, Label, TextArea, and TextInput ). In this application, you must enter a number of Canadian Dollar (Button, ComboBox, Label, TextArea, and TextInput ). In this application, the user must enter the number of Canadian dollar,
[Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]