WordPress 게시물에 \'추가 로드\' Ajax 버튼을 구현하는 방법은 무엇입니까?

<div>

function more_post_ajax() {
    // Get offset and number of posts per page
    $offset = $_POST['offset'];
    $ppp = $_POST['ppp'];

    // Query database to retrieve next set of posts

    // Return retrieved posts
    echo $posts;
    exit;
}

// Set Ajax URL
var ajaxUrl = '<?php echo admin_url('admin-ajax.php') ?>';

// When "Load More" button is clicked
$('#more_posts').on('click', function() {
    // Disable button temporarily
    $(this).attr('disabled', true);

    // Send Ajax request with offset and number of posts per page
    $.post(ajaxUrl, {
        action: 'more_post_ajax',
        offset: (page * ppp) + 1,
        ppp: ppp
    })
    .success(function(posts) {
        // Append retrieved posts to container
        $('#ajax-posts').append(posts);
        // Increment page number
        page++;
        // Re-enable "Load More" button
        $('#more_posts').attr('disabled', false);
    });
});