简单教程
提交运行
代码编辑器：
<script> function createTHead(){ var x=document.getElementById("myTable"); if (!x.tHead){ var header=x.createTHead(); var row=header.insertRow(0); var cell=row.insertCell(0); cell.innerHTML="<b>这是个表头</b>"; } } function deleteTHead(){ document.getElementById("myTable").deleteTHead(); } </script> <table id="myTable" border="1"> <tr> <td>cell 1</td> <td>cell 2</td> </tr> <tr> <td>cell 3</td> <td>cell 4</td> </tr> </table> <br> <button type="button" onclick="createTHead()">创建表头</button> <button type="button" onclick="deleteTHead()">删除表头</button>
运行结果：