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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

timestamp = Date.now();

19.4M/s

timestamp = new Date().toISOString();

4.3M/s

View exact numbers

Test name	Executions per second
✓ timestamp = Date.now();	19,423,980 Ops/sec
timestamp = new Date().toISOString();	4,271,699 Ops/sec

Script Preparation code:

var timestamp = null;

Tests: