class jkCalendar {
constructor(baseYear = 2024, baseMonth = 1, baseDay = 1) {
this.tenkan = ['甲', '乙', '丙', '丁', '戊', '己', '庚', '辛', '壬', '癸'];
this.jyuunishi = ['子', '丑', '寅', '卯', '辰', '巳', '午', '未', '申', '酉', '戌', '亥'];
this.goodDays = ['癸巳', '庚戌', '乙亥', '庚子', '甲子', '庚辰', '甲辰', '癸酉', '乙酉'];
this.sanrinbou = {
'亥': [1, 3, 7, 10],
'寅': [2, 4, 8, 11],
'午': [3, 6, 9, 12],
};
this.baseDate = new Date(baseYear, baseMonth - 1, baseDay);
this.solLun = [];
this.sanrinbou = {};
}
addLunMon(begin, end, lunMon) {
this.solLun.push({
begin: begin,
end: end,
lunMon: lunMon
});
}
getEtoIndicesForDate(date) {
const msPerDay = 24 * 60 * 60 * 1000;
const daysElapsed = Math.floor((date.getTime() - this.baseDate.getTime()) / msPerDay);
const tenkanIndex = (daysElapsed % 10 + 10) % 10;
const jyuunishiIndex = (daysElapsed % 12 + 12) % 12;
return [tenkanIndex, jyuunishiIndex];
}
isSanrinbou(date, juunishi) {
if (!(juunishi in this.sanrinbou)) {
return false;
}
const d = date.getFullYear() * 10000 + date.getMonth() * 100 + date.getDay();
for (let e of this.solLun) {
if (e.begin <= d && d <= e.end) {
console.log(juunishi);
return this.sanrinbou[juunishi].includes(e.lunMon);
}
}
return false;
}
generateCalendar(year, month, targetSelector) {
const firstDay = new Date(year, month - 1, 1);
const daysInMonth = new Date(year, month, 0).getDate();
const monthEn = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][month - 1];
let calendarHtml = `<h4 class="calendar__title"><span class="calendar__title--year">${year}</span>${month}<span class="calendar__title--en">${monthEn}</span></h4><table class="calendar__table"><tr class="calendar__table--block"><th class="calendar__table--dayweek">日</th><th class="calendar__table--dayweek">月</th><th class="calendar__table--dayweek">火</th><th class="calendar__table--dayweek">水</th><th class="calendar__table--dayweek">木</th><th class="calendar__table--dayweek">金</th><th class="calendar__table--dayweek">土</th></tr><tr class="calendar__table--block">`;
    for (let i = 0; i < firstDay.getDay(); i++) {
    calendarHtml += '<td class="calendar__table--day"></td>';
    }
    let [currentTenkanIndex, currentJyuunishiIndex] = this.getEtoIndicesForDate(firstDay);
    for (let day = 1; day <= daysInMonth; day++) {
    const currentDate = new Date(year, month - 1, day);
    const eto = this.tenkan[currentTenkanIndex] + this.jyuunishi[currentJyuunishiIndex];
    const isGoodDay = (this.goodDays.includes(eto) && !this.isSanrinbou(currentDate, this.jyuunishi[currentJyuunishiIndex])) ? ' calendar__table--day-goodday' : '';
    calendarHtml += `<td class="calendar__table--day${isGoodDay}">${day}</td>`;
    if ((day + firstDay.getDay()) % 7 === 0 && day !== daysInMonth) {
    calendarHtml += '</tr><tr class="calendar__table--block">';
    }
    currentTenkanIndex = (currentTenkanIndex + 1) % 10;
    currentJyuunishiIndex = (currentJyuunishiIndex + 1) % 12;
    }
    calendarHtml += '</tr></table>';
const elCalendar = document.querySelector(targetSelector);
if (elCalendar) {
elCalendar.innerHTML = calendarHtml;
}
}
addCalendarPdfLink(link, label, size) {
const $a = document.createElement('a');
$a.href = link;
$a.target = '_blank';
$a.className = 'link__text--pdf';
$a.rel = 'noopener nofollow';
$a.textContent = `${label}（PDF ${size}）`;
document.querySelector('#jk-calendar--link')
.append($a);
}
}
const now = new Date();
const currentYear = now.getFullYear();
const currentMonth = now.getMonth() + 1;
const jkCal = new jkCalendar();
jkCal.addLunMon(20241231,20250129,12);jkCal.addLunMon(20250129,20250228,1);jkCal.addLunMon(20250228,20250329,2);jkCal.addLunMon(20250329,20250428,3);jkCal.addLunMon(20250428,20250527,4);jkCal.addLunMon(20250527,20250625,5);jkCal.addLunMon(20250625,20250823,6);jkCal.addLunMon(20250823,20250922,7);jkCal.addLunMon(20250922,20251021,8);jkCal.addLunMon(20251021,20251120,9);jkCal.addLunMon(20251120,20251220,10);jkCal.addLunMon(20251220,20260119,11);jkCal.generateCalendar(currentYear, currentMonth, '#jk-calendar--a');
const nextMonth = currentMonth === 12 ? 1 : currentMonth + 1;
const nextYear = currentMonth === 12 ? currentYear + 1 : currentYear;
jkCal.generateCalendar(nextYear, nextMonth, '#jk-calendar--b');
jkCal.addCalendarPdfLink('https://www.daiken.jp/support/pdf/index/daiken_calendar2024.pdf', '上棟吉日カレンダー2024', '405KB');