/** * 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 );