选择div下id为topic-type的a标签的值

html代码：

  <div class="fly-panel-title fly-filter" id="topic-type">
                    <a href="${pageContext.request.contextPath}/jie/index/${cid}/0" class="layui-this">综合</a>
                    <span class="fly-mid"></span>
                    <a href="${pageContext.request.contextPath}/jie/index/${cid}/1">未结</a>
                    <span class="fly-mid"></span>
                    <a href="${pageContext.request.contextPath}/jie/index/${cid}/2">已结</a>
                    <span class="fly-mid"></span>
                    <a href="${pageContext.request.contextPath}/jie/index/${cid}/3">精华</a>
                    <span class="fly-filter-right layui-hide-xs">
                    <a href="" class="layui-this">按最新</a>
                    <span class="fly-mid"></span>
 </div>

js代码：

$('#topic-type').find('a').eq(${typeid}).addClass('layui-this').siblings().removeClass('layui-this');