在学习如何获取云函数中真实数据中，其他所有的内容都能够显示出来，唯独时间显示不出来，在百度上查了很多，如果wxs中time不是日期类型，在JS中该如何转换？附上图片和代码如下

云函数代码：

if(errcode == 0){
    return await db.collection("weibo").add({
     data:{
        content:content,
        location:location,
        author:author,
        images:images,
        video:video,
        createTime:db.serverDate(),//插入到数据库的时间
        device:device
      }
    })
  }else{
    return await {"errcode":1,"errmsg":"您的信息有风险，请修改再发布！"}
  }

JS代码：

db.collection("weibo").get().then(res=>{
    // console.log(res);
    var date = res.data[0].createTime;
    // console.log(date);
    var time = new Date(date).getTime();
    console.log(time);
    this.setData({
      time:time
    })
   })

WXS代码：
var timeFormat = function(time){
  console.log(time);
  var date = getDate(time);
  console.log(date);
  var date_seconds = date.getTime() / 1000 ;
  var now = getDate();
  var now_seconds = now.getTime() / 1000;
  var timestamp = now_seconds - date_seconds;
  var timeStr = "";
  if(timestamp < 60){
    timeStr = "刚刚";
  }else if(timestamp >= 60 && timestamp < 60 * 60){
    var minutes = parseInt(timestamp / 60);
    timeStr = minutes + "分钟前";
  }else if(timestamp >= 60 * 60 && timestamp < 60 * 60 * 24){
    var hours = parseInt(timestamp / 60 / 60);
  timeStr = hours + "小时前";
  }else if(timestamp >= 60 * 60 * 24 && timestamp < 60 * 60 * 24 * 30){
    var days = parseInt(timestamp / 60 / 60 / 24);
    timeStr = days + "天前";
  }else{
    var year = date.getFullYear();
    var month = date.getMonth();
    var day = date.getDate();
    var hour = date.getHours();
    var minute = date.getMinutes();
    timeStr = year + "/" + month + "/" + day + " " + hour + ":" + minute;
  }
  return timeStr;
}
module.exports={
  timeFormat:timeFormat,
}