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

Run details:

User agent: Mozilla/5.0 (Linux; U; Android 9; en-US; LM-Q710.FG Build/PKQ1.190522.001) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/12.12.9.1226 Mobile Safari/537.36

Browser: UC Browser 12

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Date.now()	191582.4 Ops/sec
new Date().getTime();	158464.2 Ops/sec
performance.now()	147114.9 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()