Run results for: dayjs vs luxon vs js-joda vs date-fns (manipulating)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.3.1

Device Platform: Mobile

Date tested: one year ago

js-joda

2.0M/s

date-fns

1.9M/s

Dayjs

377K/s

luxon

295K/s

View exact numbers

Test name	Executions per second
✓ js-joda	2,026,494 Ops/sec
date-fns	1,934,766 Ops/sec
Dayjs	376,837 Ops/sec
luxon	294,534 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.9/dayjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/luxon@3.4.3/build/global/luxon.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@js-joda/core@5.5.3/dist/js-joda.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.9.0/date_fns.min.js"></script>

Script Preparation code:

var dayjsNow = dayjs();
var luxonNow = luxon.DateTime.now();
var jsJodaNow = JSJoda.ZonedDateTime.now();
var now = new Date();

Tests:

Dayjs
dayjsNow.add(1, 'month');
luxon
luxonNow.plus({ months: 1 });
js-joda
jsJodaNow.plusMonths(1);
date-fns
dateFns.addMonths(now, 1);