js格式化时间

Date.prototype.formatCode = function (formatStr = "yyyy-MM-DD HH:mm:ss") {
  const paddingZero = num => num >= 10 ? num : '0' + num;
  let str = formatStr;
  str = str.replace(/yyyy|YYYY/, this.getFullYear());
  str = str.replace(/MM/, paddingZero(this.getMonth() + 1));
  str = str.replace(/dd|DD/, paddingZero(this.getDate()));
  str = str.replace(/hh|HH/, paddingZero(this.getHours()));
  str = str.replace(/mm/, paddingZero(this.getMinutes()));
  str = str.replace(/ss/, paddingZero(this.getSeconds()));
  str = str.replace(/SS/, paddingZero(this.getMilliseconds()));
  return str;
};

//使用方法
 new Date().formatCode() //  '2022-07-15 16:53:49'
 new Date().formatCode('YYYY-MM-DD') //'2022-07-15'