function formatDate(date, formatStr) {

  if (!date) {
    return ‘‘
  }
  date = new Date(date)
  function $addZero(v, size) {
    for (var i = 0, len = size - (v + "").length; i < len; i++) {
      v = "0" + v;
    }
    ;
    return v + "";
  }

  //格式化時間
  var arrWeek = [‘日‘, ‘一‘, ‘二‘, ‘三‘, ‘四‘, ‘五‘, ‘六‘],
    str = formatStr
      .replace(/yyyy|YYYY/, date.getFullYear())
      .replace(/yy|YY/, $addZero(date.getFullYear() % 100, 2))
      .replace(/mm|MM/, $addZero(date.getMonth() + 1, 2))
      .replace(/m|M/g, date.getMonth() + 1)
      .replace(/dd|DD/, $addZero(date.getDate(), 2))
      .replace(/d|D/g, date.getDate())
      .replace(/hh|HH/, $addZero(date.getHours(), 2))
      .replace(/h|H/g, date.getHours())
      .replace(/ii|II/, $addZero(date.getMinutes(), 2))
      .replace(/i|I/g, date.getMinutes())
      .replace(/ss|SS/, $addZero(date.getSeconds(), 2))
      .replace(/s|S/g, date.getSeconds())
      .replace(/w/g, date.getDay())
      .replace(/W/g, arrWeek[date.getDay()]);
  return str;
},
 

formatDate(time, ‘YYYY-MM-DD hh:ii‘)

js 時間格式化