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/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

new Date().toISOString()

2.3M/s

new Date().toLocaleString()

28K/s

View exact numbers

Test name	Executions per second
✓ new Date().toISOString()	2,344,402 Ops/sec
new Date().toLocaleString()	28,032 Ops/sec

Script Preparation code:

var timestamp = null;

Tests: