Run results for: Pre-created regexp vs created every time

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_0_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.0.3

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
pre-created	26368278.0 Ops/sec
created every time	14172456.0 Ops/sec

Script Preparation code:

var preCreated = new RegExp('^dep:(first|second|third|fourth|fifth)$');

Tests:

pre-created
preCreated.test('dep:fifth');
created every time
(new RegExp('^dep:(first|second|third|fourth|fifth)$')).test('dep:fifth');

Run results for: Pre-created regexp vs created every time

pre-created

created every time