function category_description_toggle(){
?>
<script>
(function () {
    jQuery(document).ready(function ($) {
        let desc = $('#portfolio-category-description');
        $('#js_sort_items a').on('click', function() {
            let filter = $(this).data("filter");
            desc.find('div').hide();
            desc.find(`.${filter}`).show();
        });
    });
})();
</script>
<?php
}

add_action('wp_footer', 'category_description_toggle');