Run results for: iso date string sort comparison

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

sort

4.8M/s

manual compare

3.1M/s

localcompare

2.3M/s

date convert to timestamp + sort (timezone safe)

425K/s

date convert to date + sort a-b (timezone safe)

276K/s

View exact numbers

Test name	Executions per second
✓ sort	4,820,234 Ops/sec
manual compare	3,062,006 Ops/sec
localcompare	2,321,690 Ops/sec
date convert to timestamp + sort (timezone safe)	424,519 Ops/sec
date convert to date + sort a-b (timezone safe)	275,729 Ops/sec

Script Preparation code:

var dates = [
  '2021-11-22T11:00:00.000Z',
  '2021-11-22T07:00:00.000Z',
  '2021-11-24T12:30:00.000Z',
  '2021-11-24T07:00:00.000Z',
  '2021-11-24T07:00:00.000Z',
  '2021-11-26T07:00:00.000Z',
  '2021-11-26T12:30:00.000Z',
  '2021-11-26T12:30:00.000Z',
  '2021-11-27T11:00:00.000Z',
  '2021-11-27T12:30:00.000Z',
  '2021-09-22T11:00:00.000Z',
  '2021-09-22T07:00:00.000Z',
  '2021-09-24T12:30:00.000Z',
  '2021-09-24T07:00:00.000Z',
  '2021-09-24T07:00:00.000Z',
  '2021-09-26T07:00:00.000Z',
  '2021-05-26T12:30:00.000Z',
  '2021-12-26T12:30:00.000Z',
  '2021-09-27T11:00:00.000Z',
  '2021-09-27T12:30:00.000Z',
];

Tests: