织梦DEDECMS怎么用JS方式调用评论总数

document.writeln("共有 <?php 
require(dirname(__FILE__)."/../include/config_base.php"); 
$db = new DedeSql(false); 
$rs = $db->GetOne("SELECT postnum FROM dede_archives WHERE ID=&#39;{$aid}&#39;"); 
if(!is_array($rs)){ 
echo "0"; 
}else { 
echo $rs[&#39;postnum&#39;]; 
} 
?>位网友发表了评论");

<script type="text/javascript" src="/plus/fedcount.php?aid={dede:field name=ID/}"></script>