미니프로그램 개발에 있어서 어려운 점은 무엇인가요?

    let scene = 't=3&n='+ this.inputVal+'&sale='+this.saleId;
    request(qcode,{isHyaline:false,qrcodeType:2,scene:scene,width:255,color:{r:'255',g:'255',b:'255'}})
      .then(res=>{})
    })

  onLoad(opts){
    var scene = decodeURIComponent(opts.scene); // scene 需要使用 decodeURIComponent 才能获取到生成二维码时传入的 scene
     
  }

function toMiniProgram(appid, path, extraData) {
  wx.navigateToMiniProgram({
    appId: appid,  // 要打开的小程序 appId
    path: path,   // 打开的页面路径
    envVersion: 'develop',  //要打开的小程序版本。仅在当前小程序为开发版或体验版时此参数有效。
    extraData: extraData,  // 需要传递给目标小程序的数据
    success: function (res) {
      console.log('打开成功')
    },
    fail: function (res) {}
  })
}

 toMiniProgram('appid','pages/customer/goods-detail?id='+id+'&saleId='+this.saleId,{});

onLoad(opts){
    this.goodsId=opts.id
    this.saleId=opts.saleId
}

<view class="tab-ctn">
  <view class="tabs flex flex-justify {{isTabFixed?&#39;fixed&#39;:&#39;&#39;}}" id="tabs">
    <view class="item pr {{tabIndex===0?&#39;on&#39;:&#39;&#39;}}" @tap="toggleTab(0)">商品介绍</view>
    <view class="item pr {{tabIndex===1?&#39;on&#39;:&#39;&#39;}}" @tap="toggleTab(1)">规格参数</view>
  </view>
</view>

.tabs{  padding:0 176rpx;
        font-size:30rpx;
        height:90rpx;
        border-bottom:0.5px solid #E4E4E4;}
.item{
    height:100%;
    position:relative;
    padding-top:20rpx;
    color:#999;
    &.on{
    color:#FD343B;
    font-weight:bold;
    }
}
.fixed{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:9;
}

data={
    detailTopH:300, 
}
onLoad(){
    this.getElHeight('') // tab上面元素的高度
}
/**封装根据id获取元素高度 */
getElHeightById(id){
  return new Promise(function(resolve,reject){
    const query = wx.createSelectorQuery()
    query.select('#'+id).boundingClientRect()
    query.selectViewport().scrollOffset()
    query.exec(function (res) {
      resolve(res[0].height)
    })
  })
}
// 调用
  getElHeight(id){
    this.getElHeightById(id).then(res=>{
      this.detailTopH = res
    })
  }
/**监听页面滚动事件 */
  onPageScroll(e){
    if(e.scrollTop>=this.detailTopH && !this.isTabFixed){
      this.isTabFixed=true
    }else if(e.scrollTop<=this.detailTopH && this.isTabFixed){
      this.isTabFixed=false
    }
  }

function formatTime(timestamp, type = "date") {
  var date = new Date(timestamp);
  var year = date.getFullYear()
  var month = date.getMonth() + 1
  var day = date.getDate()
 
  var hour = date.getHours()
  var minute = date.getMinutes()
  var second = date.getSeconds()
  if (type == "date") {
    return [year, month, day].map(formatNumber).join('-');
  } else if (type == "all") {
    return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, second].map(formatNumber).join(':')
  } else if (type == "time") {
    return [hour, minute, second].map(formatNumber).join(':')
  } else if (type == "time2") {
    return [hour, minute].map(formatNumber).join(':')
  } else if (type == 'month') {
    return [month, day].map(formatNumber).join('-');
  }
 
}
/**niu 封装时间戳格式化辅助,将年月日先转为字符串，再判断是否加0*/
function formatNumber(n) {
  n = n.toString()
  return n[1] ? n : '0' + n
}
 
formatTime(1236547891,'all') // 2019-11-02 03:11:11
formatTime(1236547891,'time')  // 03:11:22
formatTime(1236547891,'time2')  // 03:11
formatTime(1236547891,'month')  // 03-03
formatTime(1236547891,'date')  // 2019-11-02