yyq_wxapp/pages/tool/agree/agree.wxml

<cu-custom isBack="{{true}}">
  <view slot="backText">返回</view>
  <view slot="content">电子合同</view>
</cu-custom>

<view wx:if="{{prevUrl}}">
  <image src="{{prevUrl}}" style="width:100%" mode="widthFix" bindtap="preview"></image>
  <button type="primary" bindtap="gotoSign">重新签名</button>
</view>
<view class="container" wx:else>
  <image src="https://yyq2.oss-cn-shanghai.aliyuncs.com/pdf/sign.jpg" mode="widthFix" style="width:100%" bindtap="preview">
  </image>
  <view style="padding:20rpx">
    <button wx:if="{{currentTime>0}}" type="info">{{currentTime}}秒后可以进入签名</button>
    <button wx:else type="primary" bindtap="gotoSign">点击进入签名</button>
  </view>
</view>