Tạp Chí CNTT

<button id="load-more">Load more posts</button>

jQuery(document).ready(function($) {
  var page = 1;
  // Bind the load more button click event.
  $("#load-more").on("click", function() {
    // Send an AJAX request to the `wp-admin/admin-ajax.php` file.
    $.ajax({
      url: ajaxurl,
      type: "POST",
      data: {
        action: "load_more_posts",
        page: page++,
      },
      success: function(response) {
        // Append the new posts to the DOM.
        $("#posts").append(response);
      }
    });
  });
});

function load_more_posts() {
  // Get the current page number.
  $paged = ($_POST['page'] ?? 1);
  $post_type = isset($_POST["post_type"]) ? sanitize_key($_POST["post_type"]) : 'post';

  // Get the posts for the current page.
  $args = [
     'post_status' => 'publish',
     'post_type' => $post_type,
     'paged' => $paged,
  ];
  $query = new WP_Query($args);
  // Loop through the posts and echo them.
  if ($query->have_posts()) {
    while ($query->have_posts()) {
      $query->the_post();
      // Add the post HTML to the $posts_html variable.
      $posts_html .= '<h2>' . the_title() . '</h2>';
      $posts_html .= the_content();
    }
  }
  // Set the post offset.
  wp_reset_postdata();
  // Return the posts HTML.
  return $posts_html;
}

add_action('wp_ajax_load_more_posts', 'load_more_posts');
add_action('wp_ajax_nopriv_load_more_posts', 'load_more_posts');