简单教程
提交运行
代码编辑器：
<script> function displayResult(){ var x=document.getElementById("myTable"); var th=x.getElementsByTagName("th"); for (var i=0;i<th.length;i++){ alert ("The " + (i+1) + ". column axis is: " + th[i].axis); } } </script> <table border="1" id="myTable"> <tr> <th axis="car">名称</th> <th axis="country">国家</th> </tr> <tr> <td>BMW</td> <td>Germany</td> </tr> <tr> <td>Volvo</td> <td>Sweden</td> </tr> <tr> <td>Saab</td> <td>Sweden</td> </tr> </table> <br> <button type="button" onclick="displayResult()">获取Axis</button>
运行结果：