您可以像这样包装函数并将其挂接到ajax调用：

//if you want only logged in users to access this function use this hook
add_action(\'wp_ajax_more_links\', \'my_AJAX_more_links_function\');
//if you want none logged in users to access this function use this hook
add_action(\'wp_ajax_nopriv_more_links\', \'my_AJAX_more_links_function\');

function my_AJAX_more_links_function(){
    check_ajax_referer(\'more_links\');
    $success_response = new WP_Ajax_Response();
    $args = array(\'posts_per_page\' => 20 , \'offset\' => $_POST[\'offset\']);
    $sidebar = new WP_Query($args);
    if ( $sidebar->have_posts() ){ 
         while ( $sidebar->have_posts() ) {
            $sidebar->the_post(); 
            $out .= \'<div class="story">\';
            $out .= \'<a href="\' . the_permalink().\'" title="\'. the_title\'.">\' . the_title().\' - \'.the_time("F j, Y h:i A") .\'</a></div>\';
        }
        $success_response->add(array(
                    \'what\' => \'has\',
                    \'data\' => array(\'html\' => $out, \'offset\' => $_POST[\'offset\']
        ));
    }else{
        $out = __(\'Sorry but No more!\');
        $success_response->add(array(
                    \'what\' => \'none\',
                    \'data\' => $out
                ));
    }

    $success_response->send();      
    exit;   
}

<span class="more_links"></span>
<span class="get_more">
    <input type="hidden" name="offset" id="offset" value="20">
    <input type="submit" name="more" id="more" value="Get more links">
</span>
<script type="text/javascript" >
jQuery(document).ready(function($) {
    jQuery(\'#more\').click(function() { 
        var data = {
            action: \'more_links\',
            offset: jQuery( \'#offset\' ).val(),
            _ajax_nonce: <?php echo wp_create_nonce( \'more_links\' ); ?>
        };

        // since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
        jQuery.post(ajaxurl, data, function(response) {
            var res = wpAjax.parseAjaxResponse(response, \'ajax-response\');
            jQuery.each( res.responses, function() { 
                if (this.what == \'has\') {
                    //insert links
                    jQuery(".more_links").append( this.data.html ); 
                    //update offset value
                    jQuery("#offset").val(this.data.offset);
                    jQuery(".more_links").fadeIn("fast");
                }else{
                    //no more links found
                    jQuery(".more_links").append( this.data.html );
                    jQuery(".get_more").remove();

                }
                //end if
                });//end each


        });

        return false;
    })
});
</script>

add_action(\'wp_head\',\'add_scripts_121\');
function add_scripts_121(){
    wp_enqueue_script(\'wp-ajax-response\');
}