当然，这个get_template_part() 函数可以引用不同的文件多次调用，因此如果partials/-文件夹中，只需在此处添加第二个函数调用。

function load_cat_posts () {
    $cat_id = absint($_REQUEST[\'cat\']);
    $args = array (
       \'cat\' => $cat_id,
       \'posts_per_page\' => 10,
       \'order\' => \'DESC\'
   );

    global $post;
    $posts = get_posts($args);

    ob_start ();

    foreach ( $posts as $post ) {
        setup_postdata( $post ); ?>

        <?php get_template_part( \'partials/listing\', \'post\'); ?>
        <?php get_template_part( \'partials/listing\', \'category\'); ?>

    <?php } wp_reset_postdata();

    $response = ob_get_contents();
    ob_end_clean();

    echo $response;
    die(
}

编辑：我误解了你的问题要显示与类别本身相关的数据，可以使用get_category 函数获取包含以下属性的对象：

stdClass Object
(
    [term_id] => 85
    [name] => Category Name
    [slug] => category-name
    [term_group] => 0
    [term_taxonomy_id] => 85
    [taxonomy] => category
    [description] => 
    [parent] => 70
    [count] => 0
    [cat_ID] => 85
    [category_count] => 0
    [category_description] => 
    [cat_name] => Category Name
    [category_nicename] => category-name
    [category_parent] => 70
)

function load_cat_posts () {
    $cat_id = absint($_REQUEST[\'cat\']);
    $args = array (
       \'cat\' => $cat_id,
       \'posts_per_page\' => 10,
       \'order\' => \'DESC\'
   );

   $category = get_category($cat_id);
   // ...
}