Run results for: new Date().toISOString() vs new Date().toLocaleString()

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 Edg/135.0.0.0

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

new Date().toISOString()

1.1M/s

new Date().toLocaleString()

452K/s

View exact numbers

Test name	Executions per second
✓ new Date().toISOString()	1,083,295 Ops/sec
new Date().toLocaleString()	452,281 Ops/sec

Script Preparation code:

var timestamp = null;

Tests: