js比較日期大小（年月日、月日）

let nowMonthDay = tool.getNowMonthDay();
let _nowMonthDay = new Date(nowMonthDay.replace(/-/g, "/"));
var MayStart = new Date('05-15'.replace(/-/g, "/"));
var MayEnd = new Date('05-30'.replace(/-/g, "/"));
var NovStart = new Date('11-15'.replace(/-/g, "/"));
var NovEnd = new Date('11-30'.replace(/-/g, "/"));
if (!((MayStart < _nowMonthDay < MayEnd) || (NovStart < _nowMonthDay < NovEnd))) {
  util.warning("提示信息！");
  return false;
}

註釋：日期按照格式化進行輸入，也可以寫成年月日例如：2020-01-01