大家在寫視圖層這樣寫

<?= Html::beginForm(['order/update'], 'post', ['enctype' => 'multphp foreach ($type as $key => $v) {    ?>                <option   value="<?php echo $v['id'] ?>"><?php echo $v['goodstype'] ?></option>                 <?php    } ?>                        </select>          </td>      </tr>           <?php foreach ($goods as $key => $val) {   ?>       <tr>                      <td><input type="checkbox" name="" id="<?=$val['id']?>"  value="<?php echo $val['id'] ?>"></td>           <td><?php echo $val['goods'] ?></td>       </tr>      <?php      } ?>  </table>  <input type="button" id="save" value="保存"><?= Html::endForm() ?>

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下面是重點jq寫法通過屬性來修改下拉框的屬性

$(".type").change( function() {     $("input:checked").attr("checked",false);      var id=$(this).val();      var url="<?php echo url::to(['goods/upd']) ?>"      $.Ajax({         type:"post",         url:url,         data:{id:id},         dataType:"json",         success:function(msg){           $.each(msg,function(y,m)            {                   // alert( "#"+m.id);                $("#"+m.id).

對應后臺處理過程

 public function actionUpd()    {         $request = Yii::$app->request;        $id = $request->post('id');        // var_dump($id);        $connection = /Yii::$app->db;        $sql="SELECT id FROM goods where tid='$id'";        $command = $connection->createCommand($sql);        $posts = $command->queryAll();        // var_dump($posts);        echo json_encode($posts);    }

2重點修改/**修改本分類下的商品并保存 */$(document).on('click','#save',function(){     var tid=$('.type').val();     // alert(tid);     var ch=$("input:checked");          var arr=[];     $.each(ch,function(y,m)     {         if(ch.eq(y).prop("checked")){            arr.push(ch.eq(y).val());         };     });      ids=arr.join(",",arr);      // alert(ids);    $.ajax({       type: "POST",       url: "<?= url::to(['goods/up'])?>",       data:{tid:tid,ids:ids},       success: function(msg){         alert(msg);       }    });        })

我們再看看他對應后臺處理

 public function actionUp()  {    $request = Yii::$app->request;    $tid = $request->post('tid');    // var_dump($tid);    $ids=$request->post('ids');    // var_dump($ids);    $connection = /Yii::$app->db;    $sql="update goods set tid='$tid' where id in($ids)";    $command = $connection->createCommand($sql);    $res=$command->execute();    var_dump($res);      }  /**