将分钟数转为小时分钟

export function toHourMinute (t) {
  if (t < 0) {
    return ''
  }
  t > 1440 && (t -= 1440)
  var e = t % 60
  e < 10 && (e = '0' + e)
  var r = Math.floor(t / 60)
  return r < 10 && (r = '0' + r),
  r + ':' + e
}