Using menu methods

The menu widget contains a host of different methods, in addition to the core methods such as destroy, disable, enable, option, and widget, which means that it has a rich set of different behaviors. It also supports the implementation of advanced functionality that allows us to work with it programmatically. Let's take a look at the methods, which are listed in the following table:

Option	Use
blur	Removes focus from a menu, resets any active element styles, and triggers the menu's blur event.
collapse	Closes the currently active submenu.
collapseAll	Closes all open submenus.
expand	Opens the submenu below the currently active item, if one exists.
focus	Activates a particular menu item, begins opening any submenu, if present, and triggers the menu's focus event.
isFirstItem	Returns a Boolean value stating whether or not the currently active item is the first item in the menu.
isLastItem	Returns a Boolean value stating whether or not the currently...