デモ

<table id="test_tbl" class="tbl2">
	<thead>
		<tr><th>id</th><th>コード</th><th>名前</th><th>備考</th></tr>
	</thead>
	<tbody>
		<tr><td><span class='id'>1</span></td><td>neko</td><td>猫</td></tr>
		<tr><td><input type='hidden' name='id' value='2' />2</td><td>yagi</td><td>山羊</td><td>草食</td></tr>
		<tr><td><strong><span class='id'>3</span></strong></td><td>same</td><td>鮫</td></tr>
		<tr><td><strong><input type='hidden' name='id' value='4' />4</strong></td><td>wasi</td><td>鷲</td></tr>
		<tr><td>5</td><td>goki</td><td><input type='hidden' class='id' value='5' />御器</td></tr>
		<tr data-id='6'><td>6</td><td>roba</td><td>ロバ</td></tr>

	</tbody>
</table>
idコード名前備考
1neko
2yagi山羊草食
3same
4wasi
5goki御器
6robaロバ