计算俩个时间中间的时差

/**

• 算出俩个时间之间的时间差(天时*分)
  */
  const timeDifference = function (faultDate,callBack){
  let timeArr = faultDate.split(' ');
  let timeDate = timeArr[0].split('-').join('/');
  let timeMin = timeArr[1];
  let timeString = timeDate + ' ' + timeMin
  var stime = Date.parse(new Date(timeString));
  var etime = Date.parse(new Date());
  var usedTime = stime - etime; //两个时间戳相差的毫秒数
  var days = Math.floor( usedTime / (24 * 3600 * 1000) );
  //计算出小时数
  var leave1 = usedTime % (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));
  var time = days + "天" + hours + "小时" + minutes + "分钟";
  callBack(time);
  }
  注释：faultDate（指定一个时间） callBack（回调函数）