问下商品咋么取出商品的扩展属性通过标签

前台比普通标签获取多一个attr。如自定义标为scorelimit，获取为${a.attr.scorelimit} 

打个看清楚 是 扩展属性

在辅助里面的

就是扩展属性，前台默认模板不也是有例子吗？？

<form id="jvForm" action="${urlPrefix}${urlSuffix}">
     <div class="searchColMainItem searchResultOp">
        <dl>
            <dt>品牌：</dt>
              <input type="hidden" name="brandId" id="brandId" value="${brandId!}"/>
              <input type="hidden" name="isShow" id="isShow" value="${isShow!}"/>
              <input type="hidden" name="pageSize" id="pageSize" value="${pageSize!2}"/>
              [@cate_brand categoryId=category.id]
              <dd><span class="all"><a [#if !(brandId??)]class="cur"[/#if] onclick="clickBrand('');">全部</a></span>
                  <span class="selection fashion" id="FacetBrandsAll" >
                  [#list tag_list as brd]
                    [#if brd_index lt 12]
                     <a [#if brandId??][#if brandId==brd.id]class="cur"[/#if][/#if] onclick="clickBrand(${brd.id},0);">${brd.name!}</a>
                     [#else]
                        <a [#if brandId??][#if brandId==brd.id]class="cur"[/#if][/#if]  onclick="clickBrand(${brd.id},1);" [#if isShow==0] style="display:none"[/#if]>${brd.name!}</a>
                     [/#if]
                   [/#list]
                  </span>
              </dd>
              <dd class="more">
                [#if !(tag_list?size lt 12)]
                     <a [#if isShow==1]class="pack" style="display:none"[/#if] id="FacetBrandsMoreBtn" onclick="showMore('FacetBrandsAll','more')" href="javascript:void(0)" >更多</a>
                     <a [#if isShow==0]class="pack" style="display:none"[/#if] id="FacetBrandsBackBtn" onclick="showMore('FacetBrandsAll','back')" href="javascript:void(0)" >收起</a>
                 [/#if]
              </dd>
          [/@cate_brand]  
          </dl>
          <!--判断是要被隐藏的属性部分是否有被选中的属性，如果有则显示隐藏部分-->
          [#list  map?keys as mykey]
          [#assign mlist=map[mykey]] 
          [#assign st=map1[mykey]]
          [#if 0<(fields?size)]
             <dl class="last">
             <dt>${st.name!}：</dt>
             <dd>
             [#list fields as field]
              [#if field==st.field]
[#list zhis as zhi]
                    [#if field_index==zhi_index]
                   <span class="all">
                      <a [#if zhi=="0"]class="cur" [/#if] onclick="clickchang('exended_${st.field}','');">全部</a>
                   </span>
                    <span class="selection">
                      <input type="hidden" id="exended_${st.field}" name="exended_${st.field}"  value="${zhi}"  />
                     [#list mlist as m]
                       <a [#if zhi=="${m.id}"]class="cur" [/#if] onclick="clickchang('exended_${st.field}','${m.id}');">${m.name!}</a>
                     [/#list]
                   </span>
                   [/#if]
                  [/#list]
                [/#if]
                [/#list]
              </dd>
         </dl>
  [#else]
<dl class="last">
              <dt>${st.name!}：</dt>
              <dd>
                  <span class="all">
                     <a class="cur"onclick="clickchang('exended_${st.field}','');">全部</a>
                  </span>
                  <span class="selection">
                     <input type="hidden" id="exended_${st.field}" name="exended_${st.field}"  value=""  />
                    [#list mlist as m]
                     <a  onclick="clickchang('exended_${st.field}','${m.id}');">${m.name!}</a>
                    [/#list]
                  </span>
              </dd>
        </dl>
  [/#if]
          [/#list]
    </div>
<!-- 排序方式与布局方式切换区 -->
   <div class="rankOp clearfix">
       <input type="hidden" name="orderBy" id="orderBy" value="${orderBy!}"/>
       <ul class="rank clearfix">
        <!-- 排序方式 -->
        <li [#if orderBy==0]class="normal"[/#if]><a onclick="clickOrderBy(0);">默认排序</a></li>
        <li [#if orderBy==4]class="down"[#else]class="default"[/#if]><a onclick="clickOrderBy(4);"><span>销量</span></a></li>
        [#if orderBy==7]
        <li class="defaultPrice priceUp"><a onclick="clickOrderBy(6);"><span>价格</span></a></li>
       [#elseif orderBy==6]
       <li class="defaultPrice priceDown"><a onclick="clickOrderBy(7);"><span>价格</span></a></li>
       [#else]
       <li class="defaultPrice"><a onclick="clickOrderBy(7);" > <span>价格</span></a></li>
       [/#if]
        <li class="default"><a onclick="clickOrderBy(9);"><span>访问</span></a></li>
        <li [#if orderBy==2]class="down"[#else]class="default"[/#if]><a onclick="clickOrderBy(2);"><span>上架时间</span></a></li>
      </ul>
      <ul class="page clearfix">
          <li><a href="javascript:void(0);">每页显示数量：</a></li>
          <li><a [#if pageSize==2] class="cur"[/#if] onclick="clickPageSize(2);">2</a></li>
          <li><a [#if pageSize==8] class="cur"[/#if] onclick="clickPageSize(8);">8</a></li>
          <li><a [#if pageSize==12] class="cur"[/#if] onclick="clickPageSize(12);">12</a></li>
          <input type="hidden" name="pageSize" id="pageSize" value="${pageSize!}"/> 
     </ul>
  </div>
 </form>