求这种效果${obj.time}.substring(0,10)

Question

${bi.start_time}是String还是Date呢
我想只显示日期 
这种效果 ${bi.start_time}.substring(0,10)怎么写

Answer 1

似乎是：(new String(${bi.start_time})).slice(0,10);

Answer 2

<script type="text/javascript">
function getDate(param){
document.write(param.slice(0,10));
}
</script>
<c:if test="${requestScope.list!=null }">
<c:forEach var="bi" items="${requestScope.list}"
varStatus="loopStatus">
<tr class="${loopStatus.index % 2 == 0 ? 'even' : 'odd'}">
<td>${bi.applicant }</td>
<td><script>
getDate('${bi.start_time}')
</script>
</td>
<td>${bi.end_time }</td>
<td>${bi.days }</td>
<td>${bi.status }</td>
<td>${bi.reason }</td>
</tr>
</c:forEach>
</c:if>