dedecms ajax加载更多

<div id="content">
    <!-- 这里显示加载的内容 -->
</div>
<button id="load-more">加载更多</button>

document.getElementById('load-more').addEventListener('click', function() {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', '/plus/list.php?tid=1&totalresult=100&PageNo=' + (page + 1), true);
    xhr.onreadystatechange = function() {
        if (xhr.readyState == 4 && xhr.status == 200) {
            var data = JSON.parse(xhr.responseText);
            if (data.length > 0) {
                var contentDiv = document.getElementById('content');
                data.forEach(function(item) {
                    var div = document.createElement('div');
                    div.innerHTML = item.title;
                    contentDiv.appendChild(div);
                });
                page++;
            } else {
                document.getElementById('load-more').style.display = 'none';
            }
        }
    };
    xhr.send();
});

<?php
require_once(dirname(__FILE__) . "/include/common.inc.php");
$tid = isset($tid) ? intval($tid) : 0;
$page = isset($page) ? intval($page) : 1;
$totalresult = isset($totalresult) ? intval($totalresult) : 100;

$query = "SELECT * FROM dede_archives WHERE typeid = $tid LIMIT " . ($page - 1) * 10 . ", 10";
$result = $dsql->ExecuteNoneQuery($query);

$data = array();
while ($row = $dsql->GetArray($result)) {
    $data[] = $row;
}

echo json_encode($data);
?>