在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
<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>
</head>

<body>
<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>

</body>
</html>
源代码

动行结果
