1. 判斷日期格式是否正確，可以使用正則表達式

  const isDate = function(date) {
    const regExp = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/;
    return regExp.test(date) && !isNaN(new Date(date).getTime());
  };

或者使用日期校驗方法

  const isCheckDate = function(date) {
    const res = date.match(/^(\d{1,4})(\-|\/|\.)(\d{1,2})\2(\d{1,2})$/);
    if (res !== null) {
      const tmpDate = new Date(res[1], parseInt(res[3]) - 1, res[4]);
      return tmpDate.getFullYear() === parseInt(res[1]) && tmpDate.getMonth() + 1 === parseInt(res[3]) && tmpDate.getDate() === parseInt(res[4]);
    }
    return false;
  };

2. 獲取日期區(qū)間的日期列表，

const getDateIntervalsList = function(startDate, endDate) {
  const isDate = function(date) {
    const regExp = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/;
    return regExp.test(date) && !isNaN(new Date(date).getTime());
  };
  const dateList = [];
  if (isDate(startDate) && isDate(endDate)) {
    const sT = new Date(startDate);
    const eT = new Date(endDate);
    while (eT.getTime() - sT.getTime() >= 0) {
      const year = sT.getFullYear();
      const month = (sT.getMonth() + 1).toString().padStart(2, '0');
      const day = (sT.getDate()).toString().padStart(2, '0');
      dateList.push(year + '-' + month + '-' + day);
      sT.setDate(sT.getDate() + 1);
    }
  }
  return dateList;
};
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