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jQuery(function($) { $('.header-post-slider').on('afterChange', function(event, slick, currentSlide){ $('.header-post-slider .slick-slide') .attr('aria-hidden', 'true') .attr('tabindex', '-1'); $('.header-post-slider .slick-slide').eq(currentSlide) .attr('aria-hidden', 'false') .attr('tabindex', '0'); }); });