<div class="form-group row">

             <label class="col-lg-3 control-label">附加图片：</label>

             <div style="display: inline-block">

                 <div class="col-lg-9" id="imgdiv">

                     <img

                         src="<?= \yii\helpers\Url::toRoute('@web/' . $photo1) ?>"

                         style="width: 50px;height: 50px;cursor:pointer" id="imgShow">

                 </div>

                 <div style="display: none">

                     <input type="file" id="up_img" name="photo1"/>

                 </div>

             </div>

             <div <?= $photo2 == 'assets/Public/images/add.png' ? "style='display: none'" : "style='display: inline-block'";

             ?> id="two">

                 <div class="col-lg-9" id="imgdiv1">

                     <img src="<?= \yii\helpers\Url::toRoute('@web/' . $photo2) ?>"

                          style="width: 50px;height: 50px;cursor:pointer" id="imgShow1">

                 </div>

                 <div style="display: none">

                     <input type="file" id="up_img1" name="photo2"/>

                 </div>

             </div>

             <div <?= $photo3 == 'assets/Public/images/add.png' ? "style='display: none'" : "style='display: inline-block'";

             ?> id="three">

                 <div class="col-lg-9" id="imgdiv2">

                     <img src="<?= \yii\helpers\Url::toRoute('@web/' . $photo3) ?>"

                          style="width: 50px;height: 50px;cursor:pointer" id="imgShow2">

                 </div>

                 <div style="display: none">

                     <input type="file" id="up_img2" name="photo3"/>

                 </div>

             </div>

             <div style="display: inline-block">

                 <div class="col-lg-9" id="img-button">

                     <img id="img-upload" src="<?= \yii\helpers\Url::toRoute('@web/assets/Public/images/add.png') ?>"

                          style="width: 50px;height: 50px;cursor:pointer">

                     </img>

                 </div>

             </div>

         </div>

    new uploadPreview({UpBtn: "up_img", DivShow: "imgdiv", ImgShow: "imgShow"});

         new uploadPreview({UpBtn: "up_img1", DivShow: "imgdiv1", ImgShow: "imgShow1"});

         new uploadPreview({UpBtn: "up_img2", DivShow: "imgdiv2", ImgShow: "imgShow2"});

         // 第一张

         $("#imgShow").click(function () {

             $("#up_img").click();

         });

         $("#up_img").change(function () {

             $("#two").css({"display": 'inline-block'});

             $("#img-button").css({"display": 'none'});

         });

         //第二张

         $("#imgShow1").click(function () {

             $("#up_img1").click();

         });

         $("#up_img1").change(function () {

             $("#three").css({"display": 'inline-block'});

         });

         //第三张

         $("#imgShow2").click(function () {

             $("#up_img2").click();

         });

         //上传按钮

         //第三张

         $("#img-upload").click(function () {

             $("#up_img").click();

         });