app/components/popup/popup.wxml

<view class="wx-popup" hidden="{{flag}}">
  <view class='popup-container'>
    <view class="wx-popup-title">{{title}}</view>
    <view class="wx-popup-conone">
       <image class="img" src="../../assets/images/txf.png" mode="widthFix"> </image>
    </view>
    <view class="wx-popup-con">{{content}}</view>
    <view class="wx-popup-btn">   
      <text class="btn-no" bindtap='_error'>{{btn_no}}</text>
      <text class="btn-ok" bindtap='_success'>{{btn_ok}}</text>
    </view>
  </view>
</view>