7種最佳JavaScript日期庫(kù)

moment().add(7, 'days').subtract(1, 'months').year(2009).hours(0).minutes(0).seconds(0);

moment().subtract(6, 'days').twitterShort();

var format = moment.parseFormat('Thursday, February 6th, 2014 9:20pm');// format will contain: dddd, MMMM Do, YYYY h:mma

var timer = moment.duration(5, "seconds").timer({loop: true},function() {  // Callback});

setInterval(function() {  //Callback  }, 5000)

const { addYears, formatWithOptions  } = require('date-fns/fp')const { es } = require('date-fns/locale')
const addFiveYears = addYears(5)
const dateToString = formatWithOptions({ locale: es }, 'd MMMM yyyy')
const dates = [  new Date(2017, 0, 1),  new Date(2017, 1, 11),  new Date(2017, 6, 2)]
const toUpper = arg => String(arg).toUpperCase()
const formattedDates = dates.map(addFiveYears).map(dateToString).map(toUpper)//=> ['1 ENERO 2022', '11 FEBRERO 2022', '2 JULIO 2022']

var m1 = moment();var m2 = m1.add(1, 'hours');m1.valueOf() === m2.valueOf(); //=> true
var d1 = DateTime.local();var d2 = d1.plus({ hours: 1 });d1.valueOf() === d2.valueOf(); //=> false

ms('2 days')  // 172800000ms('1d')      // 86400000ms('10h')     // 36000000ms('2.5 hrs') // 9000000ms('2h')      // 7200000ms('1m')      // 60000ms('5s')      // 5000
ms(60000)             // "1m"ms(2 * 60000)         // "2m"ms(-3 * 60000)        // "-3m"

// implement a TemporalAdjuster that returns the next or same even day of monthvar nextOrSameEvenDay = {  adjustInto: function(t) {    return t.dayOfMonth() % 2 === 0 ? t : t.plusDays(1);  }};
LocalDateTime.parse("2012-12-23T12:00").with(nextOrSameEvenDay); // '2012-12-24T12:00'LocalDate.parse("2012-12-24").with(nextOrSameEvenDay); // '2012-12-24'

const spacetime = require('spacetime')
let d = spacetime('March 1 2012', 'America/New_York')//set the timed = d.time('4:20pm')console.log(d.time())
d = d.goto('America/Los_Angeles')console.log(d.time())//'1:20pm'

d = d.goto('Eastern Time') // "America/New_York"d = d.goto('PST') // automatically becomes 'PDT' in the summer

spacetime.extend({  isHappyHour: function() {    return this.hour() === 16  }})d = d.time('4:15pm')console.log(d.isHappyHour())//true