微信小程序wx：for使用没效果

Question

我是想循环出数组live_data里面的内容，但是没有效果，是我哪里写错了吗

.chooseEchartsBoxRow{
  padding: 4px;
  z-index: 1;
  display: flex;
  flex-direction: row; 
  justify-content: flex-start;
}
.chooseEchartsBoxRev{
  display: flex;
  flex-direction: column; 
  justify-content: flex-start;
}
.chooseEchartsNoChoose{
  height: 150rpx;
  width: 216rpx;
  background-color:#409EFF;
  color:white;
  border-radius: 5px;
  z-index: 5;
  margin: 0 2px 0 2px;
  padding: 10rpx;
}
.chooseEchartsChoose{
  height: 150rpx;
  width: 216rpx;
  background-color:#77ffcc;
  border-radius: 5px;
  z-index: 5;
  margin: 0 2px 0 2px;
  color: black;
  padding: 10rpx;
}
.number{
  font-size: 32px;
  display: flex;
  flex-direction: row; 
  justify-content: flex-start;
}
.unit{
  font-size: 13px;
}

            <block wx:for="{{live_data}}">
                <view class="chooseEchartsBoxRev">
                    <view class="chooseEchartsBoxRow">
                        <view class="chooseEchartsChoose">{{item.name}}
                            <view class="number">{{item.data}}
                                <text class="unit">{{item.unit}}</text>
                            </view>
                        </view>
                    </view>
                </view>
            </block>

打印出来数组内容是这样的

Answer 1

没有指定那个对象的名吧