14. trigger, on and off
zz( '#t14-1' ).trigger( 'click' );
Counter: 0
zz( '#t14-2b' ).off( 'click' );
Counter: 0
zz( '#t14-3b' ).off();
Counter: 0
zz( '#t14-4b' ).off( 'click', listener );
Counter: 0
zz( '#t14-5b' ).off( 'click', listener2 );
Counter: 0
zz( '#t14-6b' ).off( 'focus', listener2 );
Counter: 0
zz( '#t14-7b' ).off( 'focus' );
Counter: 0
zz( '#t14-8b' ).off();
Counter: 0
zz( '#t14-9b' ).on( ... ); (using data)
Counter: 0