Run results for: Regex vs split for Authorization Headers

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0

Browser: Firefox 151

Operating system: Linux

Device Platform: Desktop

Date tested: 3 months ago

Benchmark engine: Benchmark.js

Regex replace without global

22.2M/s

Regex replace and trim

10.9M/s

Split on space

10.1M/s

View exact numbers

Test name	Executions per second
✓ Regex replace without global	22,173,222 Ops/sec
Regex replace and trim	10,948,417 Ops/sec
Split on space	10,070,045 Ops/sec

Script Preparation code:

var authHeader = 'Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyLCJkZnMiOiJhZGZzamxrO2FzZGZqbGs7c2RmYWtqbDthc2RmamtsIiwiaXNzIjoiaHR0cHM6Ly92ZXJ5LnZlcnkudmVyeS52ZXJ5LnZlcnkubG9uZy5leGFtcGxlLmNvbSJ9.RGmluP8NjlKuiow57PkkAZLUCwclllRBPURJU7Hajmo';

Tests:

Split on space
authHeader.split(' ')[1]
Regex replace and trim
authHeader.replace(/Bearer/g,'').trim()
Regex replace without global
authHeader.replace(/Bearer /,'')

Run results for: Regex vs split for Authorization Headers

Is it faster to get the meat from an Authorization header by splitting on the space? or using a regex replace and trim?

Split on space

Regex replace and trim

Regex replace without global