正確           <view class="orderOne" v-for="(item,index) in allOrderList" :key="index">
                <view class="orderTop" @tap="toOrgPage(item,index)">
                    <image src="../../static/btn_campus.png" mode=""></image>
                    <view class="orderNum"
 
>{{item.order.orgName ? item.order.orgName : ''}}{{item.order.campName ? '(' + item.order.campName + ')' : ''}}</view>
                    <image class="topErrow" src="../../static/back_white@[email protected]" mode=""></image>
                    <view class="orderStatus">{{item.order.orderStatus}}</
 
view>
                </view>
                <view class="orderLine"></view>
                <view class="course" v-for="(item2,index) in item.order.orderItemsList" :key="index" @tap="toOrderDetail(item2)">
                    <view class="img">
                        <
 
image :src="item2.itemLogo" mode="aspectFill"></image>
                    </view>
                    <view class="courseInfo">
                        <view class="courseName">{{item2.itemName}}</view>
                        <view class="subHeading">{{item2.subheading}}</view>
                        <view class="priceName">{{item2.priceName}} {{item2.classTimeCount + '課時'}}</view>
                        <view class="priceNum">
                            <view class="price">
                                <text class="priceSymbol">￥</text>
                                {{item2.price}}
                            </view>
                            <view class="courseNum">x{{item2.itemNumber}}</view>
                        </view>
                    </view>
                </view>

之前, 遍歷時

 v-for="(item,index) in allOrderList"  沒有加 index, 唯一值用的是 :key='item.id', 列印大當前點選為 undefined, 加上index打印出來了!!!!