Traffic-widget/miniprogram/components/face_img/index.wxml

<!--components/face_img/index.wxml-->
<view class="face_img">
  <image class="face" src="./icon/face.jpg" mode="scaleToFill" />
  <image wx:if="{{topTips === '请向左转头' }}" class="face_to" src="./icon/left.jpg" mode="scaleToFill" />
  <image wx:if="{{topTips === '请向右转头' }}" class="face_to" src="./icon/right.jpg" mode="scaleToFill" />
</view>