Benchmark: new Date().getTime() vs new Date().toISOString()

Script Preparation code:

var timestamp = null;

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
timestamp = Date.now();
timestamp = new Date().toISOString();

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Safari/605.1.15

Browser/OS: Safari 26 on Mac OS X 10.15.7

timestamp = Date.now();

36.2M/s

timestamp = new Date().toISOString();

9.8M/s

View exact numbers

Test name	Executions per second
✓ timestamp = Date.now();	36,152,848 Ops/sec
timestamp = new Date().toISOString();	9,793,853 Ops/sec

new Date().getTime() vs new Date().toISOString() (version: 1)