Run results for: how fast is regex?

Run details:

User agent: Mozilla/5.0 (Android 16; Mobile; rv:146.0) Gecko/146.0 Firefox/146.0

Browser: Firefox Mobile 146

Operating system: Android

Device Platform: Mobile

Date tested: 4 months ago

Test name	Executions per second
instantiate new regex	25259264.0 Ops/sec
use existing regex	17972264.0 Ops/sec

Script Preparation code:

const prepared = /[.*+?^${}()|[\]\\]/g;

Tests:

instantiate new regex
const blah = "whatever" const r = blah.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")
use existing regex
const blah = "whatever" const r = blah.replace(prepared, "\\$&")