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我不熟悉 AJAX，我需要使用数据库表更新 JSP 页面中的值。请帮我写下相关的 AJAX 部分。我目前所做的如下所示，页面仅在刷新时更新值。

<script>
//Ajax code here
</script> 
<body>
    <%ResultSet rsplayer = db.selectQuery("select score, playerid from player where playerid = '100'"); while(rsplayer.next()){%>
    <h1><%out.print(rsplayer.getString("playerid"));%> = <%out.print(rsplayer.getString("score"));%></h1>
    <%}%>
</body>
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