<tbody id="add_enterGoods_table">
<tr>
<td align="center"><div style=" 25px;" name="xh">1</div></td>
<td align="center"><input style="20px;" type="checkbox" name="ck" id="ck"/></td>
<input name="enterGoodsList[0].usedFlag" type="hidden"/>
</tr><tbody>
var usedFlag = $("#add_enterGoods_table").find("input[name$='ck']:checked").parent().parent().find("input[name$='usedFlag']").val();