希望你们一切顺利，
我一直在努力寻找一种方法来显示自特定日期以来的年，月，周和日所经过的时间。我发现的最接近的是下面的内容，但我可以很好地了解如何让它显示年份和月份。
任何提示都将不胜感激。
由于
window.onload = function() {
doTime('jan,01,2017,00:00:01');
}
function doTime(then) {
now = new Date();
then = new Date(then);
difference = (now - then);
days = Math.floor(difference / (60 * 60 * 1000 * 24) * 1);
hours = Math.floor((difference % (60 * 60 * 1000 * 24)) / (60 * 60 * 1000) * 1);
mins = Math.floor(((difference % (60 * 60 * 1000 * 24)) % (60 * 60 * 1000)) / (60 * 1000) * 1);
secs = Math.floor((((difference % (60 * 60 * 1000 * 24)) % (60 * 60 * 1000)) % (60 * 1000)) / 1000 * 1);
document.getElementById('timer').firstChild.nodeValue =
+days + ' days ' + hours + ' hours ' + mins + ' minutes ' + secs + ' seconds';
clearTimeout(doTime.to);
doTime.to = setTimeout(function() {
doTime(then);
}, 1000);
}<div id="timer"> </div>
- 感谢前一篇文章的建议，遗憾的是我已经尝试了，我只能让它来处理两个实际日期之间的差异，我不能让它自动生成结束日期，所以它随着时间的推移自动计数。
- 我已经做了一些更多的摆弄并设法达到这个目标，对js来说是新手，你们会说这是非常接近吗？感谢
var startDateTime = new Date(2012,5,24,09,43,0,0); // YYYY (M-1) D H m s
(start time and date from DB)
var startStamp = startDateTime.getTime();
var newDate = new Date();
var newStamp = newDate.getTime();
var timer;
function updateClock() {
newDate = new Date();
newStamp = newDate.getTime();
var diff = Math.round((newStamp-startStamp)/1000)
var years = Math.floor(diff/(12*4.3479*7*24*60*60));
diff = diff-(years*12*4.3479*7*24*60*60)
var months = Math.floor(diff/(4.3479*7*24*60*60));
diff = diff-(months*4.3479*7*24*60*60)
var weeks = Math.floor(diff/(7*24*60*60));
diff = diff-(weeks*7*24*60*60)
var days = Math.floor(diff/(24*60*60));
diff = diff-(days*24*60*60);
var hours = Math.floor(diff/(60*60));
diff = diff-(hours*60*60);
var mins = Math.floor(diff/(60));
diff = diff-(mins*60);
var secs = diff;
document.getElementById("time-elapsed").innerHTML = years+" years,
"+months+" months, " +weeks+" weeks, " +days+" days, "+hours+" hours and
"+mins+" minutes,";
}
setInterval(updateClock, 1000);
<div id="time-elapsed"></div>
答案 0 :(得分：0)
function calculateDifference(thenString) {
const second = 1000
const minute = 60 * second
const hour = 60 * minute
const day = 24 * hour
const month = 30 * day // approximately
const year = 365 * day // approximately
const now = new Date();
const then = new Date(thenString);
let difference = (now - then);
const time = [{ year }, { month }, { day }, { hour }, { minute }, { second }].map((item, i, a) => {
const [[unitName, unit]] = Object.entries(item)
const units = difference / unit | 0
difference -= unit * units
const maybePlural = units === 1 ? "" : "s"
return units > 0 ? units + " " + unitName + maybePlural : ""
}).filter(x => x)
const formattedTime = time.length > 1 ? [...time.slice(0, -1), "and", time.slice(-1)].join(" ") : time[1]
return formattedTime
}
function displayDifference() {
displayBox.textContent = calculateDifference(dateInput.value + ", " + timeInput.value)
}
const dateInput = document.querySelector(".date")
const timeInput = document.querySelector(".time")
const displayBox = document.querySelector(".js-display-difference")
dateInput.addEventListener("change", displayDifference)
timeInput.addEventListener("change", displayDifference)
displayDifference()
setInterval(displayDifference, 1000)<h3>
since
<input class="date" type="date" value="2017-01-01"/>
<input class="time" type="time" value="00:00"/>
elapsed
<span class="js-display-difference"></span>
</h3>
momentjs和precise range plugin
function calculateDifference(thenString) {
var m1 = moment(Date.now())
var m2 = moment(new Date(thenString))
var diff = moment.preciseDiff(m1, m2)
return diff
}
function displayDifference() {
displayBox.textContent = calculateDifference(dateInput.value + ", " + timeInput.value)
}
const dateInput = document.querySelector(".date")
const timeInput = document.querySelector(".time")
const displayBox = document.querySelector(".js-display-difference")
dateInput.addEventListener("change", displayDifference)
timeInput.addEventListener("change", displayDifference)
displayDifference()
setInterval(displayDifference, 1000)<script src="https://unpkg.com/moment@2.18.1"></script>
<script src="https://unpkg.com/moment-precise-range-plugin@1.2.3"></script>
<h3>
since
<input class="date" type="date" value="2017-01-01"/>
<input class="time" type="time" value="00:00"/>
elapsed
<span class="js-display-difference"></span>
答案 1 :(得分：0)
我不是IT专家，所以也许有更好的方法，但是我所做的似乎可行。这里可以看到一个示例：Date difference in action
我的方法不是从第一个日期算起天数差异，而是从“开始日期”中的天数位置算出“截至日期”中的天数位置。即，在我60岁生日那天，我出生以来已经过了15个leap年，但这些日子不算在内。我今年60岁，而不是60岁15天。
为了证明我不是IT专家，我无法发布代码，但是您可以在示例中查看源代码。 顺便说一句，我只使用chrome / edge，因此未在其他平台上进行测试。