如何使用jQuery计算表中的行数？
示例
<html>
<head>
<title>table</title>
<style type="text/css">
table,th,td {
border:2px solid black;
margin-left:400px;
}
h2 {
margin-left:400px;
}
button {
margin-left:400px;
}
</style>
<script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$("button").click(function () {
var rowcount = $('table tr').length;
alert("No. Of Rows ::" +rowcount);
});
});
</script>
</head>
<body>
<div>
<h2>HTML TABLE</h2>
<table>
<tr>
<th>
NAME
</th>
<th>
AGE
</th>
</tr>
<tr>
<td>DD</td>
<td>35</td>
</tr>
<tr>
<td>SB</td>
<td>35</td>
</tr>
<tr>
<td>AD</td>
<td>5</td>
</tr>
<tr>
<td>AA</td>
<td>5</td>
</tr>
</table>
<button type="button" id="btn">Click Here</button>
</div>
</body>
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