ejs在select的option里传url参数

<select onchange="window.location=this.value" id="userCoinsOperate" name="userCoinsOperate" class="selectpicker show-tick form-control" data-live-search="false" >
<% for(var j=0 ;j< data.enableCoins.length;++j){%>

            <option  value="?<%=data.enableCoins[j]%>" selected=""><a herf="dddyy"><%=data.enableCoins[j]%></a></option>

            <%}%>
          </select>