Вы уже извлекли Date ссылку на MDN?
Существуют методы для получения этой информации.
// Vanilla JS
var utcDate = new Date();
console.log({
yearDay: utcDate.getUTCFullYear(),
monthDay: utcDate.getUTCMonth(),
weekDay: utcDate.getUTCDay(),
toDay: utcDate.getUTCDate(),
hour: utcDate.getUTCHours(),
min: utcDate.getUTCMinutes(),
sec: utcDate.getUTCSeconds(),
ms: utcDate.getUTCMilliseconds()
});
// Moment
var utcMoment = moment.utc();
console.log({
yearDay: utcMoment.year(),
monthDay: utcMoment.month(),
weekDay: utcMoment.isoWeekday(),
toDay: utcMoment.date(), // Day of month or utcMoment.dayOfYear(),
hour: utcMoment.hours(),
min: utcMoment.minutes(),
sec: utcMoment.seconds(),
ms: utcMoment.milliseconds()
});
.as-console-wrapper { top: 0; max-height: 100% !important; }
<script src="https://momentjs.com/downloads/moment.min.js"></script>
Обновление
Если вы хотите получить дату определенного дня недели, вы можете клонироватьdate, рассчитайте разницу в днях и сложите / вычтите это количество дней из текущей даты.
const TimeUnit = {
YEARS : {
add : function(date, amount, utc) {
if (utc) date.setUTCFullYear(date.getUTCFullYear() + amount);
else date.setUTCFullYear(date.getUTCFullYear() + amount);
return date;
}
},
MONTHS : {
add : function(date, amount, utc) {
if (utc) date.setUTCMonth(date.getUTCMonth() + amount);
else date.setMonth(date.getMonth() + amount);
return date;
}
},
DAYS : {
add : function(date, amount, utc) {
if (utc) date.setUTCDate(date.getUTCDate() + amount);
else date.setDate(date.getDate() + amount);
return date;
}
},
HOURS : {
add : function(date, amount, utc) {
if (utc) date.setUTCHours(date.getUTCHours() + amount);
else date.setHours(date.getHours() + amount);
return date;
}
},
MINUTES : {
add : function(date, amount, utc) {
if (utc) date.setUTCMinutes(date.getUTCMinutes() + amount);
else date.setMinutes(date.getMinutes() + amount);
return date;
}
},
SECONDS : {
add : function(date, amount, utc) {
if (utc) date.setUTCSeconds(date.getUTCSeconds() + amount);
else date.setSeconds(date.getSeconds() + amount);
return date;
}
},
MILLISECONDS : {
add : function(date, amount, utc) {
if (utc) date.setUTCMilliseconds(date.getUTCMilliseconds() + amount);
else date.setMilliseconds(date.getMilliseconds() + amount);
return date;
}
}
};
function addTime(date, timeUnit, amount, utc) {
return timeUnit.add(date, amount, utc);
}
function getDateForCurrentWeek(date, dayOfWeek, utc) {
var clone = new Date(date.getTime());
var currentDay = (utc ? clone.getUTCDay() : clone.getDay()) || 7;
var diff = dayOfWeek - currentDay + 1;
return addTime(clone, TimeUnit.DAYS, diff, utc);
}
function printDate(targetEl, date, utc) {
targetEl.value = JSON.stringify(utc ? {
year: date.getUTCFullYear(),
month: date.getUTCMonth() + 1,
dayOfWeek: date.getUTCDay(),
date: date.getUTCDate(),
hour: date.getUTCHours(),
min: date.getUTCMinutes(),
sec: date.getUTCSeconds(),
ms: date.getUTCMilliseconds()
} : {
year: date.getFullYear(),
month: date.getMonth() + 1,
dayOfWeek: date.getDay(),
date: date.getDate(),
hour: date.getHours(),
min: date.getMinutes(),
sec: date.getSeconds(),
ms: date.getMilliseconds()
}, null, 2);
}
function setDayOfWeekValue(selector, date, dayOfWeek, utc) {
document.querySelector(selector).value = getDateForCurrentWeek(date, dayOfWeek, utc);
}
var utcDate = new Date();
setDayOfWeekValue('.day-sun', utcDate, 0, true);
setDayOfWeekValue('.day-mon', utcDate, 1, true);
setDayOfWeekValue('.day-tue', utcDate, 2, true);
setDayOfWeekValue('.day-wed', utcDate, 3, true);
setDayOfWeekValue('.day-thu', utcDate, 4, true);
setDayOfWeekValue('.day-fri', utcDate, 5, true);
setDayOfWeekValue('.day-sat', utcDate, 6, true);
// Test adding 1 unit to each date portion.
printDate(document.getElementById('result-1'), utcDate, true);
utcDate = addTime(utcDate, TimeUnit.YEARS, 1, true);
utcDate = addTime(utcDate, TimeUnit.MONTHS, 1, true);
utcDate = addTime(utcDate, TimeUnit.DAYS, 1, true);
utcDate = addTime(utcDate, TimeUnit.HOURS, 1, true);
utcDate = addTime(utcDate, TimeUnit.MINUTES, 1, true);
utcDate = addTime(utcDate, TimeUnit.SECONDS, 1, true);
utcDate = addTime(utcDate, TimeUnit.MILLISECONDS, 1, true);
printDate(document.getElementById('result-2'), utcDate, true);
.days-of-week .day-of-week {
margin-bottom: 0.25em;
}
.days-of-week label {
display: inline-block;
font-weight: bold;
width: 3em;
}
.days-of-week input[class^="day-"] {
font-family: monospace;
width: 80vw;
}
<div class="days-of-week">
<div class="day-of-week"><label>Sun</label><input type="text" class="day-sun" /></div>
<div class="day-of-week"><label>Mon</label><input type="text" class="day-mon" /></div>
<div class="day-of-week"><label>Tue</label><input type="text" class="day-tue" /></div>
<div class="day-of-week"><label>Wed</label><input type="text" class="day-wed" /></div>
<div class="day-of-week"><label>Thu</label><input type="text" class="day-thu" /></div>
<div class="day-of-week"><label>Fri</label><input type="text" class="day-fri" /></div>
<div class="day-of-week"><label>Sat</label><input type="text" class="day-sat" /></div>
</div>
<textarea id="result-1" rows="12" cols="32"></textarea>
<textarea id="result-2" rows="12" cols="32"></textarea>