14. trigger, on and off

zz( '#t14-1' ).trigger( 'click' );

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zz( '#t14-2b' ).off( 'click' );

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zz( '#t14-3b' ).off();

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zz( '#t14-4b' ).off( 'click', listener );

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zz( '#t14-5b' ).off( 'click', listener2 );

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zz( '#t14-6b' ).off( 'focus', listener2 );

Counter: 0
zz( '#t14-7b' ).off( 'focus' );

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zz( '#t14-8b' ).off();

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zz( '#t14-9b' ).on( ... ); (using data)

Counter: 0