fxc-wecat/pages/navbar/navbar.wxml

<!--pages/navbar/navbar.wxml-->
<view style="margin-bottom: {{height*2 + 20}}px;">
  <view class='nav-wrap' style='height: {{height*2 + 20}}px;'>
    <view class='nav-title' style='line-height: {{height*2 + 44}}px;'>{{navbarData.title}}</view>
    <view style='display: flex; justify-content: space-around;flex-direction: column'>
      <!-- // 导航栏 左上角的返回按钮 和home按钮 -->
      <!-- // 其中wx:if='{{navbarData.showCapsule}}' 是控制左上角按钮的显示隐藏，首页不显示 -->
      <view class='nav-capsule' style='height: {{height*2 + 44}}px;' wx:if='{{navbarData.showCapsule}}'>
        <!-- //左上角的返回按钮，wx:if='{{!share}}'空制返回按钮显示 -->
        <!-- //从分享进入小程序时 返回上一级按钮不应该存在 -->
        <view bindtap='_navback' wx:if='{{navbarData.share}}'>
          <image src='/img/history.png' mode='aspectFill' class='back-pre'></image>
        </view>
        <!-- <view class='navbar-v-line' wx:if='{{!share}}'></view> -->
        <view bindtap='_backhome' wx:else>
          <image src='/img/index.png' mode='aspectFill' class='back-home'></image>
        </view>
      </view>
    </view>
  </view>
</view>