我有一個(gè)c#腳本，其中我為當(dāng)前年，當(dāng)前月份，當(dāng)前周和當(dāng)前日期創(chuàng)建時(shí)間戳。DateTime now = DateTime.UtcNow;now = new DateTime(now.Year, 1, 1);int yearDay = (int)(now.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;now = new DateTime(now.Year, now.Month, 1);int monthDay = (int)(now.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;now = DateTime.UtcNow.StartOfWeek(DayOfWeek.Monday);int weekDay = (int)(now.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;now = new DateTime(now.Year, now.Month, now.Day);int toDay = (int)(now.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;現(xiàn)在我想完成同樣的事情，但是在javascript中...我已經(jīng)得到了一年，但不知道如何得到月，周和日。var d = new Date();// YEAR TIMESTAMP //var thisYear = d.getUTCFullYear();var y = Date.UTC(thisYear, 0, 1, 0, 0, 0, 0);var yearDay = Math.floor(y / 1000);希望有人可以在這件事上幫助我，并提前感謝：-）我也得到了這樣的月份，但仍然需要弄清楚我如何得到今天的一天和一周。// MONTH TIMESTAMP //var thisMonth = d.getUTCMonth();var m = Date.UTC(thisYear, thisMonth, 1, 0, 0, 0, 0);var monthDay = Math.floor(m / 1000);// C# toDay output: 1548979200// C# weekDay output: 1548633600在toDay中嘗試了此操作，但輸出與C#中的輸出不同：// DAY TIMESTAMP //var thisDay = d.getUTCDay();var da = Date.UTC(thisYear, thisMonth, thisDay, 0, 0, 0, 0);var toDay = Math.floor(da / 1000);// output: 1549324800仍然希望得到幫助：-）編輯 2 ***********好吧，我終于把這一天弄對了：// DAY TIMESTAMP //var da = Date.UTC(thisYear, thisMonth, thisDay, 0, 0, 0, 0);var toDay = Math.floor(da / 1000);現(xiàn)在剩下的，就是我如何才能把這一周弄對。我試過這個(gè)：// WEEK TIMESTAMP //var w = Date.UTC(thisYear, thisMonth, d.setDate(d.getDate() - (d.getDay() || 7) + 1), 0, 0, 0, 0);var weekDay = Math.floor(w / 1000);這將輸出一個(gè) NaN。關(guān)于我如何做到這一點(diǎn)的任何想法？
2 回答
嗶嗶one
TA貢獻(xiàn)1854條經(jīng)驗(yàn) 獲得超8個(gè)贊
要在一周開始時(shí)獲得星期一，您可以減去日數(shù)并添加一個(gè)。星期日為 0，因此要獲取上一個(gè)星期一，請將其日期編號更改為 7。
您錯(cuò)誤地使用了代碼，返回調(diào)整后日期的時(shí)間值，這是您想要的。您無需再執(zhí)行任何操作。但是，由于您使用的是 UTC 值，因此它位于您的上下文中。d.setDate(...)
我已更改變量名稱，以包含UTC作為其值的提示。此外，“Date”方法返回月份中的日號，“Day”方法返回一周中的日號。
var d = new Date();
var utcYear = d.getUTCFullYear();
// Only year and month need to be set, missing values will default to minimums
var yearDay = Math.floor(Date.UTC(utcYear, 0) / 1000);
// MONTH TIMESTAMP //
var utcMonth = d.getUTCMonth();
var monthDay = Math.floor(Date.UTC(utcYear, utcMonth) / 1000);
// DAY TIMESTAMP // - changed "Day" to "Date"
var utcDate = d.getUTCDate();
var toDay = Math.floor(Date.UTC(utcYear, utcMonth, utcDate) / 1000);
// WEEK TIMESTAMP //
var w = new Date(Date.UTC(utcYear, utcMonth, utcDate));
// Set w to Monday at start of week
w.setUTCDate(w.getUTCDate() - (w.getUTCDay() || 7) + 1);
var weekDay = Math.floor(w / 1000);
console.log(yearDay, monthDay, toDay, weekDay);
動漫人物
TA貢獻(xiàn)1815條經(jīng)驗(yàn) 獲得超10個(gè)贊
您是否在MDN上簽出了日期參考？
存在檢索此信息的方法。
// 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>
更新
如果要獲取一周中特定日期的日期，可以克隆日期，以天為單位計(jì)算差異，并從當(dāng)前日期添加/減去這些天數(shù)。
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>
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