<view class="group-list" v-for="item in message" :key="item.productId">
 <view class="group-img" @click="navTo">
 <image :src="item.productPicture"></image>
 </view>
 <view class="group-info">
 <view class="product-name">{{ item.productName }}</view>
 <view class="product-price">
  <text class="discounts">￥{{ item.productCurrentPrice }}</text>
  <text class="original">￥{{ item.productMarketPrice }}</text>
 </view>
 <view class="group-partner">
  <scroll-view scroll-x>
  <view class="user-img">
   <view v-for="(single, index) in item.avatarList" :key="index">
   <image :src="single"></image>
   </view>
   <view v-for="i in item.stillMissingNumber" :key="i">
   <image src="../../static/ssll-img/more.png"></image>
   </view>
  </view>
  </scroll-view>
  <button open-type="share">邀請好友</button>
 </view>
 <view class="clock">
  <text>拼團剩余：</text>
  <!-- 綁定倒計時 -->
  <text>{{ item.end_time1 }}</text> 
 </view>
 </view>
</view>

export default {
 data() {
  return {
  timeData: '',  //存放每條數據的處理好的倒計時
  timer: '',  //用來清除定時器
  message: []  //接口請求返回的數據
  }
 },
 onUnload(){  //卸載頁面清除定時器
   clearInterval(this.timer) 
 },
 methods: {
  getTimeList(){ 
    let that = this
    that.message.forEach((item) =>{
     var nowdate = new Date().getTime()  //獲取當前時間毫秒數
     var time = item.productExpiredTime.replace(new RegExp("-", "gm"), "/") //ios不能識別日期格式中的 "-" ； .productExpiredTime是接口返回的名稱
     var timesp = time.split('.')[0]  //此處是因為我們接口返回的時間格式是這樣："2019-12-31 11:00:00.0"
     var enddate = new Date(timesp).getTime()  //處理好格式之后獲取結束時間的毫秒數
     var totaltime = enddate - nowdate   //獲取時間差
     that.totaltime(totaltime)  //這是下面封裝的方法，將毫秒數處理成"xx時xx分xx秒"
     item.end_time1 = that.timeData //處理好的單個時間安排到item上（重要）
    })
    this.message = that.message  //全部處理好的數據重新賦值
  },
  
  totaltime(a){  //計算單個剩余時間
   let totaltime = a
    let that = this
     var h, m, s, d
     function test(num) {
       if (num < 10) {
         num = "0" + num  
       }
       return num
     }
     
    if (totaltime > 0) {
      d = Math.floor(totaltime / 1000 / 60 / 60 / 24) * 24
      h = Math.floor(totaltime / 1000 / 60 / 60 % 24)
      m = Math.floor(totaltime / 1000 / 60 % 60)
      s = Math.floor(totaltime / 1000 % 60)
      //獲取時分秒
      h = d + h
      h = test(h)
      m = test(m)
      s = test(s)
      
      this.timeData =`${h}時 : ${m}分 : ${s}秒`  // 每個時間的顯示格式
     
    } else {
      
      this.timeData = `00 : 00 : 00` 
     
    }
  },
  //以下請求此頁面需要的數據
  getUserGroupList(接口參數) {
  this.$ajax({
   url: 'xxx/xxx/xxxxxx',
   data: {接口參數},
   success: res => {
   var that = this
   let data = res.data.groups
   if (data.length === 0) {
    this.$api.msg('暫時您還沒有參團信息！')
    setTimeout (function() {
    uni.navigateBack({  //返回上一頁
      delta: 1
    })
    },1500)
   } else {
    this.message = [...that.message, ...res.data.groups]  //合并
    //數據返回成功之后再調計時器，防止異步
    //that.getTimeList()
    var timer = setInterval(function () {
      that.getTimeList()
    }, 1000)
    this.timer = timer
   }
   }
  }
}