challengeFamily/pages/product/component/paymentPopup.wxml

<popup show="{{show}}">
  <view class="content">
    <view class="article">
      <view class="title">该活动中你存在未支付尾款的订单</view>
      <view class="info">
        <text class="subtitleColor">{{presellPayEndTime}}</text>之后，预付金将会失效
      </view>
    </view>
    <view class="btns">
      <button type="warn" plain="true" bindtap="newGroup">继续报名</button>
      <button type="warn" bindtap="jumpBalancePayment">支付尾款</button>
    </view>
  </view>
</popup>