Bind an event handler to the "keyup" JavaScript event, or trigger that event on an element.
This method is a shortcut for .on( "keyup", handler ) in the first two variations, and .trigger( "keyup" ) in the third.
The keyup event is sent to an element when the user releases a key on the keyboard. It can be attached to any element, but the event is only sent to the element that has the focus. Focusable elements can vary between browsers, but form elemen