📄 testchildtags.html
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<html>
<head>
<script language="javascript">
function testFun(){
//var result = document.getElementsByTagName("tr");
//alert(result.length);
var myTable = document.getElementById("myTable");
var result = myTable.childNodes;
alert(result.length);
}
</script>
</head>
<body>
<input type="button" value="test" onclick="testFun()"><hr>
<table border="1" cellspacing="0" align="center" width="70%">
<tbody id="myTable">
<tr>
<td>1, 1</td>
<td>1, 2</td>
</tr>
<tr>
<td>2, 1</td>
<td>2, 2</td>
</tr>
</tbody>
</table>
</body>
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