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<title>dateutil-js时间举例</title>
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console.log(getdate_WMdy_En())//Thurs.Sept.2, 2020
console.log(getdate_yMdhms_T())//2020-9-2 21:41:7
console.log(getdate_WyMdhms_C())//星期四 2020年9月2日 21时38分33秒
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function siteTime(){
window.setTimeout("siteTime()", 1000)
var seconds = 1000
var minutes = seconds * 60
var hours = minutes * 60
var days = hours * 24
var years = days * 365
var today = new Date()
var todayYear = today.getFullYear()
var todayMonth = today.getMonth()
var todayDate = today.getDate()
var todayHour = today.getHours()
var todayMinute = today.getMinutes()
var todaySecond = today.getSeconds()
/* Date.UTC() -- 返回date对象距世界标准时间(UTC)1970年1月1日午夜之间的毫秒数(时间戳)
year - 作为date对象的年份,为4位年份值
month - 0-11之间的整数,做为date对象的月份
day - 1-31之间的整数,做为date对象的天数
hours - 0(午夜24点)-23之间的整数,做为date对象的小时数
minutes - 0-59之间的整数,做为date对象的分钟数
seconds - 0-59之间的整数,做为date对象的秒数
microseconds - 0-999之间的整数,做为date对象的毫秒数 */
var t1 = Date.UTC(2014,0,14,11,19,00)
var t2 = Date.UTC(todayYear,todayMonth,todayDate,todayHour,todayMinute,todaySecond)
var diff = t2-t1
var diffYears = Math.floor(diff/years)
var diffDays = Math.floor((diff/days)-diffYears*365)
var diffHours = Math.floor((diff-(diffYears*365+diffDays)*days)/hours)
var diffMinutes = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours)/minutes)
var diffSeconds = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours-diffMinutes*minutes)/seconds)
document.getElementById("sitetime").innerHTML=" 已运行"+diffYears+" 年 "+diffDays+" 天 "+diffHours+" 小时 "+diffMinutes+" 分钟 "+diffSeconds+" 秒"
}
siteTime()
用moment库function calcYearAndDateDiff(startDate, endDate) {
const startDateClone = startDate.clone()
const diffYear = endDate.diff(startDateClone, 'year')
const diffDay = endDate.diff(startDateClone.add(diffYear,'years'), 'day')
return [diffYear, diffDay]
}
const startDate= moment('2000-01-01')
const today = moment()
const tomorrow = moment().add(1,'days')
const diff1 = calcYearAndDateDiff(startDate, today)
const diff2 = calcYearAndDateDiff(startDate, tomorrow)