53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
(function () {
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'use strict';
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function updateDepartureDate(arrivalDateField) {
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const arrivalDate = new Date(arrivalDateField.value);
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if (isNaN(arrivalDate)) {
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return;
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}
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const departureDateField = document.querySelector('[name="departure_date"]');
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if (!departureDateField) {
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return;
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}
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const minNights = Math.max(1, parseInt(departureDateField.dataset.minNights, 10));
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arrivalDate.setUTCDate(arrivalDate.getUTCDate() + minNights);
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const minDate = formatDate(arrivalDate);
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departureDateField.setAttribute('min', minDate);
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const departureDate = new Date(departureDateField.value);
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if (isNaN(departureDate) || departureDate < arrivalDate) {
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departureDateField.value = minDate;
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}
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const maxNights = parseInt(departureDateField.dataset.maxNights, 10);
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if (maxNights > 0) {
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arrivalDate.setUTCDate(arrivalDate.getUTCDate() + maxNights - minNights);
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const maxDate = formatDate(arrivalDate);
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departureDateField.setAttribute('max', maxDate);
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if (!isNaN(departureDate) && departureDate >= arrivalDate) {
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departureDateField.value = maxDate;
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}
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}
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}
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function formatDate(date) {
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return `${date.getFullYear()}-${zeroPad(date.getMonth() + 1)}-${zeroPad(date.getDate())}`;
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}
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function zeroPad(num) {
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return `${num < 10 ? '0' : ''}${num}`
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}
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const arrivalDateField = document.querySelector('[name="arrival_date"]');
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if (!arrivalDateField) {
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return;
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}
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arrivalDateField.addEventListener('change', function (event) {
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updateDepartureDate(event.target);
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});
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updateDepartureDate(arrivalDateField);
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})();
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