tp3.2中ajax批量修改

1：要改的页面如下图：（通过点击选中前面复选框，然后修改排序里面数字，最后点击左下角批量更新排序实现）

2：视图层代码：

<volist name="categoryList" id="category">
                <tr>
                    <td><input type="checkbox" name='box[]' value="{$category.id}">&nbsp;&nbsp;&nbsp;&nbsp;
                    <input type="text" name="displayorder" class="order_by" id="{$category.id}" value="{$category.displayorder}" style="width: 60px;"></td>
                    <td>{$category.id}</td>
                    <td>{$category.name}</td>  

             </tr>
</volist>

<button type="button" onclick="upjdjg()" style="background-color: #428bca;" class="layui-btn layui-btn-small layui-btn-danger" title="将此商品批量更新排序">批量更新排序
                        </button>

<script type="text/javascript">

function upjdjg(){
    var box=document.getElementsByName('box[]');//获取所点击的数据id
    //alert(box);//此时应该弹出这个[object NodeList]
    var displayorder=document.getElementsByName('displayorder');//获取所要修改的字段值
    var ids='';
    for(var i=0;i<box.length;i++){
             if(box[i].checked==true){
                 ids=ids+','+box[i].value
             }
    }//循环拼接成字符串
    var IDS = ids.substr(1);
    var str='';
    for(var i=0;i<box.length;i++){
             if(box[i].checked==true){
                 str=str+','+displayorder[i].value
             }
    }//循环拼接成字符串
    var STR = str.substr(1);
    ajax=new XMLHttpRequest();//创建ajax对象
    ajax.open("get",'__APP__/Home/Index/upcode?ids='+IDS+'&str='+STR);
    ajax.send();//发送请求
    ajax.onreadystatechange=function(msg){
        location.href="__APP__/Home/Index/typeList";
        // if(ajax.readyState==4&&ajax.status==200){
        //     //console.log(ajax.responseText);
        //     if(ajax.responseText==1){
        //         location.href="__APP__/Home/Index/typeList";
        //     }else{
        //         console.log('批量更新排序失败');
        //     }
        //     }
            
    }
   
}
</script>

3:控制器里面方法：

//批量修改排序
        public function upcode(){
            $ids=$_GET['ids'];
            $str=$_GET['str'];
            $id=explode(',', $ids);
            $st=explode(',',$str);
            $res=array($id,$st);
            //print_r($res);die;
            $array=array();
            foreach ($res as $key=>$value) {
                foreach ($value as $k => $v) {
                    $array[$k][]=$v;
                }
            }
            //print_r($array);die;
               foreach ($array as $key => $value) {
            $data=[
            "displayorder"=>$value['1']
            ];
            $result=M('category')->where(array("id"=>$value['0']))->save($data);
                //echo M('category')->getLastsql();die;
               }
            if($result){
                return 1;
            }else{
                return 0;
            }
        }

        //分类修改页面
        public function updateview()
        {   
            $curr = I('param.p','p');

            $id=I('get.id')?I('get.id'):"";
            $data=M('category')->where(array("id"=>$id))->find();
            $this->assign('data',$data);

             $this->assign('p',$curr);

            $this->display();

        }