C:foreach让id变成动态

js方法function zan(st){var uid = document.getElementById("uid_"+st);alert(uid);var aid = document.getElementById("aid_"+st);alert(aid);}c:foreach<pre name="code" class="html">

<c:forEach items="${question.answers }" var="answer" varStatus="st"><div class="answer"><!--用户栏--><div class="user"><img src="${pageContext.request.contextPath}/${answer.user.image}" alt="#" id="question_detail-commentUserImg"/><span style="color: #28A1CF;" id="question_detail-commentUserName">${answer.user.username }</span><span style="float: right;line-height: 3em; color: #737373;" id="question_detail-commentUserTime"><fmt:formatDate pattern="yyyy-MM-dd " value="${answer.atime }" /></span><input type="hidden" id="uid_${st.index }" value="${answer.user.uid}"> 

a便签调用js

<a href="javascript:zan(${st.index });" style="color: #28A1CF; float: right; margin-right: 20px;">支持(${answer.goodCount})</a>