layui select下拉菜单联动

<div class="layui-inline">
                    <label class="layui-form-label">商品类别</label>
                    <div class="layui-input-inline">
                        <select name="interest"  lay-filter="one_cate">
                            <option value="">请选择</option>
                            {volist name="list" id="vo"}
                            <option value="{$vo.cate_id}">{$vo.cate_name}</option>
                            {/volist}
                        </select>
                    </div>
                    <div class="layui-input-inline">
                        <select name="interest" lay-filter="aihao" id="two_cate">
                          </select>
                    </div>
                </div>

form.on('select(one_cate)', function(data){
             //data.value 得到被选中的值
             var url = '/admin/category/selec/' + data.value;
             $.get(url,function(data){
                $("#two_cate").empty();
                $("#two_cate").append(new Option("请选择分类",""));
                $.each(data,function(index,item){
                    $("#two_cate").append(new Option(item,index));
                    console.log(index,item);
                }); 
                layui.form.render("select");
             });

        });