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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

new Date().toISOString()

3.3M/s

new Date().toLocaleString()

605K/s

View exact numbers

Test name	Executions per second
✓ new Date().toISOString()	3,277,514 Ops/sec
new Date().toLocaleString()	605,024 Ops/sec

Script Preparation code:

var timestamp = null;

Tests: