Run results for: Date.now() vs new Date().getTime() vs performance.now()

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/227.1.470269224 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.0

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Date.now()	751254.3 Ops/sec
new Date().getTime();	723327.3 Ops/sec
performance.now()	714076.3 Ops/sec

Script Preparation code:

var timestamp = null;

Tests:

Date.now()
timestamp = Date.now();
new Date().getTime();
timestamp = new Date().getTime();
performance.now()
timestamp = performance.now()

Run results for: Date.now() vs new Date().getTime() vs performance.now()

Date.now()

new Date().getTime();

performance.now()