cloudapp-cli/lib/date.js

exports.format = function (date = new Date(), format = "yyyyMMdd_HHmmss") {
  const o = {
    "M+": date.getMonth() + 1,
    "d+": date.getDate(),
    "H+": date.getHours(),
    "m+": date.getMinutes(),
    "s+": date.getSeconds(),
  };
  if (/(y+)/.test(format))
    format = format.replace(
      RegExp.$1,
      (date.getFullYear() + "").substr(4 - RegExp.$1.length)
    );
  for (const 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;
};