时间格式化

export function dateFormat(date) {
  let format = 'yyyy-MM-dd hh:mm:ss';
  if (date != 'Invalid Date') {
    var o = {
      "M+": date.getMonth() + 1, //month
      "d+": date.getDate(), //day
      "h+": date.getHours(), //hour
      "m+": date.getMinutes(), //minute
      "s+": date.getSeconds(), //second
      "q+": Math.floor((date.getMonth() + 3) / 3), //quarter
      "S": date.getMilliseconds() //millisecond
    }
    if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
      (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
      if (new RegExp("(" + k + ")").test(format))
        format = format.replace(RegExp.$1,
          RegExp.$1.length == 1 ? o[k] :
            ("00" + o[k]).substr(("" + o[k]).length));
    return format;
  }
  return '';

}