时间差

 formatSeconds: function(value) {
    let that = this;

    var chetheTime = parseInt(value); // value是时间戳
    var timestamp = (new Date()).getTime();
    var date3 = chetheTime - timestamp;


    //计算出相差天数
    var days = Math.floor(date3 / (24 * 3600 * 1000))

    //计算出小时数

    var leave1 = date3 % (24 * 3600 * 1000) //计算天数后剩余的毫秒数
    var hours = Math.floor(leave1 / (3600 * 1000))
    //计算相差分钟数
    var leave2 = leave1 % (3600 * 1000) //计算小时数后剩余的毫秒数
    var minutes = Math.floor(leave2 / (60 * 1000))


    //计算相差秒数
    var leave3 = leave2 % (60 * 1000) //计算分钟数后剩余的毫秒数
    var seconds = Math.round(leave3 / 1000)


    that.setData({
      endtimeNow: (days > 0 ? (days + "天 ") : '') + (hours > 0 ? (hours + "小时 ") : '') + (minutes>0? (minutes + " 分钟" ):'')+ seconds + " 秒"
    })
  },
  //  再次购买
  aginBuy: function(e) {
    console.log(e)
    let item = e.currentTarget.dataset.item;
    let orderd = this.data.orderd;
    let shopId = orderd.shopId;

    if (item.type == 0) {
      wx.navigateTo({
        url: '/page/home/pages/shops/shops?cheid=' + shopId
      })
    } else {
      wx.navigateTo({
        url: '/page/near/pages/shops/shops?cheid=' + shopId
      })
    }
  },