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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:108.0) Gecko/20100101 Firefox/108.0

Browser: Firefox 108

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
new Date().toISOString()	2469460.0 Ops/sec
new Date().toLocaleString()	571065.2 Ops/sec

Script Preparation code:

var timestamp = null;

AخA
 
var timestamp = null;

Tests:

new Date().toISOString()
timestamp = new Date().toISOString();
timestamp = new Date().toISOString();
new Date().toLocaleString()
timestamp = new Date().toLocaleString();
timestamp = new Date().toLocaleString();