微信小程序中Js的Date转换成Wxs的date(距离现在的时间

在Js中试了其他的toxxxString方法，就这个toISOString()方法的返回结果是正确的

index.js

Page({
  data: {
  },
  onLoad() {
    var time = new Date(2021, 3, 7, 12, 43, 0).toISOString();
    this.setData({
      time: time
    });
  }
})

index.wxml

<wxs src="tool.wxs" module="tool"/>
<view>
  {{tool.timeFormat(time)}}
</view>

index.wxs

var timeFormat = function (time) {
  var lastDate = getDate(time);
  console.log(lastDate);
  var lastTime = lastDate.getTime() / 1000;
  var nowDate = getDate();
  var nowTime = nowDate.getTime() / 1000;
  var timeStamp = nowTime - lastTime;
  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 = lastDate.getFullYear();
    var month = lastDate.getMonth();
    var day = lastDate.getDay();
    var hour = lastDate.getHours();
    var minute = lastDate.getMinutes();
    timeStr = year + '/' + month + '/' + day + ' ' + hour + ':' + minute;
  }
  return timeStr;
};

module.exports = {
  timeFormat: timeFormat
};

Js传给Wxml传给Wxs，然后转换成Wxs的Date 距离现在的时间间隔