北京时间

  Date.prototype.toBJDate = () => {
      const date = new Date()
      const timeZone = date.getTimezoneOffset() * -1 / 60
      let hour = date.getHours()
      if (timeZone < 0) {
        date.setHours(hour + 8 + Math.abs(timeZone))
      } else {
        date.setHours(hour + 8 - timeZone)
      }
      return date.toLocaleString()
    }