Mina_B/miniprogram/pages/version/version.wxml

<!--pages/version/version.wxml-->
<view class="container">

  <view class="version-now">当前版本为 v {{version}}</view>

  <view class="message" wx:if='{{!update}}'>您已是最新版本</view>
  <view wx:if='{{update}}' class="message">可升级至最新版本 v{{version}}</view>
  <view class="button safe-area-bottom" bindtap="update" wx:if='{{update}}'>
    <view>立即升级</view>
  </view>
</view>