/** * Twenty Fifteen keyboard support for image navigation. */ ( function( $ ) { $( document ).on( keydown.twentyfifteen, function( e ) { var url = false; // Left arrow key code. if ( e.which === 37 ) { url = $( .nav-previous a ).attr( href ); // Right arrow key code. } else if ( e.which === 39 ) { url = $( .nav-next a ).attr( href ); } if ( url && ( ! $( textarea, input ).is( :focus ) ) ) { window.location = url; } } ); } )( jQuery );