<table >

<tr>
  <th>姓名</th><th>科目</th><th>成绩</th><th>操作</th>
</tr>

<tbody>
</tbody>
</table>

<script>

var datas = [
['张三','JavaScript',100], 
[ '李四','JavaScript', 90],
['刘五', 'JavaScript', 90]
];

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</script>