Run results for: Regex vs Split for base64 string

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Regex	5931178.0 Ops/sec
Split	15659519.0 Ops/sec

Script Preparation code:

var string = `eyJ0ZXN0IjoxLCJjb21wYW5pZXMiOlsxLDIsMyw0LDUsNl0sInVzZXIiOiJ0ZXN0IiwiZGF0ZSI6Illlc3RlcmRheSIsInN0YXJ0QXQiOiIyMDIzLTExLTAxVDAwOjAwOjAwLjAwMFoifQ==`;

Tests:

Regex
string.replace(/(=+)$/, '')
Split
string.split('=')[0]