Run results for: Regex vs startswith and slice single

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows

Device Platform: Desktop

Date tested: 6 days ago

Test name	Executions per second
Regex	4244427.0 Ops/sec
starts with and slice	126688200.0 Ops/sec

Script Preparation code:

window.idregex = /^(?<type>shared)(?<id>.*)$/
window.str = 'shared:dfhalsdkfjhasldfiuyo324987';

Tests:

Regex
const match = str.match(idregex) const type = match?.groups.type; const id = match?.groups.id
starts with and slice
const type = 'shared'; str.startsWith(type) const id = str.slice('shared'.length)