js数字转ip地址

numberToIp (number) {
  let ip = ''
  if (number <= 0) {
    return ip
  }
  const ip3 = (number << 0) >>> 24
  const ip2 = (number << 8) >>> 24
  const ip1 = (number << 16) >>> 24
  const ip0 = (number << 24) >>> 24
  ip += ip3 + '.' + ip2 + '.' + ip1 + '.' + ip0
  return ip
}