Javascript 漂亮日期顯示 YYYYMMDDhhmmss or YYYY-MM-DD hh:mm:ss

getDateString.js

'use strict'

function pad(v){
  return (v<10)?'0'+v:v
}

function getDateString(d){
  var year = d.getFullYear();
  var month = pad(d.getMonth()+1);
  var day = pad(d.getDate());
  var hour = pad(d.getHours());
  var min = pad(d.getMinutes());
  var sec = pad(d.getSeconds());
  return year+month+day+hour+min+sec;
  //return year+"-"+month+"-"day+" "+hour+":"+min+":"+sec;
  //YYYYMMDDhhmmss
}

getDateString_ES6.js

const pad = (v) => {
  return (v<10)?'0'+v:v
}

const getDateString = (d) => {
  let year = d.getFullYear()
  let month = pad(d.getMonth()+1)
  let day = pad(d.getDate())
  let hour = pad(d.getHours())
  let min = pad(d.getMinutes())
  let sec = pad(d.getSeconds())
  //YYYYMMDDhhmmss
  return year+month+day+hour+min+sec
  //YYYY-MM-DD hh:mm:ss
  //return year+"-"+month+"-"day+" "+hour+":"+min+":"+sec
  
}

感謝