【JS常用方法封装】时间戳转换

/* 
    时间戳转换

    timestamp 时间戳
    format 返回的格式
*/
function fmtDateTime(timestamp, format) {
  const pad = function (val, len) {
    val = String(val)
    len = len || 2
    while (val.length < len) val = '0' + val
    return val
  }

  const date = new Date(parseFloat(timestamp))
  const year = date.getFullYear()
  const month = pad(date.getMonth() + 1)
  const day = pad(date.getDate())
  const hour = pad(date.getHours())
  const minutes = pad(date.getMinutes())
  const second = pad(date.getSeconds())

  switch (format) {
    case 'MM-DD HH:MM:SS':
      return [month, day].join('-') + ' ' + [hour, minutes, second].join(':')
    case 'YYYY-MM-DD HH:MM':
      return [year, month, day].join('-') + ' ' + [hour, minutes].join(':')
    case 'YYYY-MM-DD':
      return [year, month, day].join('-')
    case 'MM-DD':
      return [month, day].join('-')
    case 'HH:MM:SS':
      return [hour, minutes, second].join(':')
    case 'HH:MM':
      return [hour, minutes].join(':')
    case 'array':
      return [year, month, day, hour, minutes, second]
    case 'YYYY-MM-DD HH:MM:SS':
      return [year, month, day].join('-') + ' ' + [hour, minutes, second].join(':')
    case 'YYYY年MM月DD日':
      return year + '年' + month + '月' + day + '日'
    case 'YYYY年MM月DD日 HH时MM分':
      return year + '年' + month + '月' + day + '日' + ' ' + hour + '时' + minutes + '分'
    case 'MM月DD日 HH点':
      return month + '月' + day + '日' + ' ' + hour + '点'
    case 'YYYY/MM/DD HH:MM:SS':
      return year + '/' + month + '/' + day + ' ' + [hour, minutes, second].join(':')
    case 'YYYY/MM/DD 午HH:MM:SS':
      if (hour > 12) {
        return year + '/' + month + '/' + day + ' ' + '下午' + (hour - 12) + ':' + minutes + ':' + second
      } else {
        return year + '/' + month + '/' + day + ' ' + '上午' + hour + ':' + minutes + ':' + second
      }
      default:
        return [year, month, day].join('') + ' ' + [hour, minutes, second].join(':')
  }

}