JQ 获取Table的td 值

<script type="text/javascript">

function SetTable()

{

$("#myTab table").each(function ()

{

var sValue= $(this).find("tr").eq(0).find("td").eq(0).html();

alert(sValue);

})

}

</script>

<input type="button" value="111" id="mytext" onclick='SetTable()' >

<div id="myTab">

<table width="60%" id="table1" border="1px">

<tr>

<td id="td1">5</td>

<td id="td2">6</td>

</tr>

<tr>

<td>7</td>

<td>8</td>

</tr>

</table>

<table  width="60%"  border="1px">

<tr>

<td id="td1">1</td>

<td id="td2">2</td>

</tr>

<tr>

<td>3</td>

<td>4</td>

</tr>

</table>

</div>