function uploadSmallPic() {

        var upload = layui.upload;

        upload.render({

            elem: '#smallPic'

            , url: '/upload/uploadPic'

            , auto: false

            , number: 1

            , bindAction: '#uploadSmallPic'

            , choose: function (obj) {

                var files = obj.pushFile();

                obj.preview(function (index, file, result) {

                    $('#smallPicContent').append('<div  style="width:80px;height: 90px;float: left;margin-right: 5px" class="image-container" id="smallPicContainer' + index + '">' +

                        '<div class="delete-css"><button id="upload_smallPic_' + index + '" style="width: 20px;height: 20px;"><i class="layui-icon ayui-icon-close">' +

                        '</i></button>' +

                        '</div>' +

                        '<img id="showSmallPic' + index + '"  style="width:80px;height: 80px" src="' + result + '" alt="' + file.name + '"></div>'

                    );

                    //删除某图片

                    $("#upload_smallPic_" + index).bind('click', function () {

                        $("#smallPicContainer" + index).remove();

                        smallPic="";

                    });

                    //某图片放大预览

                    showMedia("showSmallPic" + index, "image", result);

                })

            },

            done: function (res, index) {

                smallPic = res.data;

                layer.msg(res.msg);

                $('#smallPicContent').html('');

                return delete this.files[index];

            }

        });

    }

function showMedia(id, type, src) {
    var idBar = "#" + id;
    $(idBar).bind('click', function () {
        var width = $(idBar).width();
        var height = $(idBar).height();
        var scaleWH = width / height;
        var bigH = 500;
        var bigW = scaleWH * bigH;
        if (bigW > 900) {
            bigW = 900;
            bigH = bigW / scaleWH;
        } // 放大预览图片
        if (type == "video") {
            layer.open({
                type: 1,
                title: false,
                closeBtn: 1,
                shadeClose: true,
                area: [bigW + 'px', bigH + 'px'], //宽高
                content: "<video width='" + bigW + "' height='" + bigH + "'controls=\"controls\" src=" + src + " />"
            });
        } else {
            layer.open({
                type: 1,
                title: false,
                closeBtn: 1,
                shadeClose: true,
                area: [bigW + 'px', bigH + 'px'], //宽高
                content: "<img width='" + bigW + "' height='" + bigH + "'controls=\"controls\" src=" + src + " />"
            });
        }

    });
}
//删除图片
function deleteMedia(id, index) {
    var idBar = "#" + id;
    $(idBar).bind('click', function () {
        //从map中删除
        imgUrlList.splice(index, 1)
        //删除div
        $("#container" + index).remove();
    });
}

  //设置小图

                    if (resp.data.goods.smallPic != null) {

                        smallPic = resp.data.goods.smallPic;

                        $('#smallPicContent').append('<div  style="width:80px;height: 90px;float: left;margin-right: 5px" class="image-container" id="smallPicContainer">' +

                            '<div class="delete-css"><button id="upload_smallPic_' + '" style="width: 20px;height: 20px;"><i class="layui-icon ayui-icon-close">' +

                            '</i></button>' +

                            '</div>' +

                            '<img id="showSmallPic' + '"  style="width:80px;height: 80px" src="' + smallPic + '"></div>'

                        );

                        //删除某图片

                        $("#upload_smallPic_").bind('click', function () {

                            $("#smallPicContainer").remove();

                            smallPic="";

                        });

                        //某图片放大预览

                        showMedia("showSmallPic", "image", smallPic);

                    }