Run results for: Creating Date objects 350 vs 9000

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
350 object creations	27368.3 Ops/sec
9000 object creations	1063.5 Ops/sec

Tests:

350 object creations
function parseMyDate() { const dateString = "2024-05-31T09:13:43.095Z"; if (/^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/.test(dateString)) { dateString += 'Z'; } const result = Date.parse(dateString); return isNaN(result) ? null : (result / 1000.0); } for (var i=0; i<350; i++) { parseMyDate(); }
9000 object creations
function parseMyDate() { const dateString = "2024-05-31T09:13:43.095Z"; if (/^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/.test(dateString)) { dateString += 'Z'; } const result = Date.parse(dateString); return isNaN(result) ? null : (result / 1000.0); } for (var i=0; i<9000; i++) { parseMyDate(); }