<tr class="pj" data-val="no">

<th id="first_tr" rowspan="1" colspan="1" data-id="xxx">自我评价<button type="button" title="添加" id="add_rw"/>

</th>

<td colspan="2">

<input type="text" name="task_name" datatype="title" Caption="自我评价" MAXLEN="100" ISNULL="notnull"/></td>

<td colspan="1"><input type="checkbox" name="result" value="2"/></td>

<td colspan="1"><input type="checkbox" name="result" value="1"/></td>

<td colspan="1"><input type="checkbox" name="result" value="0"/></td>

</tr>

       $("input[name='result']").on("click",function(){

            var len =     $(this).parent().siblings().children("input").attr("checked",false);

            $(this).attr("checked",true);

    });

       $("table").on("click","input[name='result']",function(){

            var len = $(this).parent().siblings().children("input").attr("checked",false);

            $(this).attr("checked",true);

    });