<c:forEach items="${list}" var="list" varStatus="s">
<tr align="center" style="color: red">
  <td>${list.id}</td>
  <td>${list.yclName}</td>
  <td>${list.guige}</td>
  <td>${list.shuliang}</td>
  <td>${list. fasr}</td>
  <td>暂无</td>
  <td>${list.fsrq}</td>
  <td><input id="day${s.count}" type="text" class="input2" name="day"/></td>//重点。给LIST中的每个INPUT赋予不同的ID。方便JS使用
  <td>
  <c:if test="${list.beizhu eq null}">无</c:if>
  <c:if test="${list.beizhu ne null}">${list.beizhu}</c:if>	
  </td>
  <td>未处理</td>  				           
  <td><a href="javascript:tiaozhuan('${s.count}','${list.id}','${list.flag}')">确认</a></td>
</tr>
</c:forEach>

//js
<script type="text/javascript">
function tiaozhuan(a,b,c){
var val = document.getElementById("day"+a).value;
if(val!=""){
	if(isNaN(val)){
		alert("请输入数字！");
	}else{
	window.location = "ylbzRequest.do?method=updateYlbzRequest&id="+b+"&flag="+c+"&day="+val;
	}
}else{
	alert("请输入时间！");	
     }
}
</script>