Run results for: Regex vs startsWith

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser: Chrome 149

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one month ago

startsWith

57.1M/s

Regex

10.7M/s

View exact numbers

Test name	Executions per second
✓ startsWith	57,093,600 Ops/sec
Regex	10,656,233 Ops/sec

Tests:

Regex
const testString = 'QualtricsEOS|SV_7amJ2Dww8cWdtQh | FS_2zd0QZhebl4cRHT'; testString.match(/^QualtricsEOS\|(SV_[0-9a-zA-Z]{11,15})\|(FS_[0-9a-zA-Z]{11,15})$/);
startsWith
const testString = 'QualtricsEOS|SV_7amJ2Dww8cWdtQh | FS_2zd0QZhebl4cRHT'; testString.startsWith('QualtricsEOS');