JS获取EL表达式的值

<c:forEach items="${yppctpList}" var="yppctp" varStatus="j">
<a class="item">
<span style="white-space:pre">	</span><img  src="<%=basePath%>${yppctp.tpui}" alt=""  id="coll${j.index}" name="img123" onclick="img('coll${j.index}')" ><b></b>
<span style="white-space:pre">	</span><span>${yppctp.tpnr}</span>
</a>
</c:forEach>

<pre name="code" class="javascript">function img(textid){
var id11 = textid.substring(4);
var imgs = document.getElementsByName("img123");
var img_src;
var i;
for(i=0;i<imgs.length;i++){
if(i==id11){
img_src = imgs[i].src;
break;
}
}
}