Run results for: regex vs substring compare

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

substring

61.7M/s

regex

2.2M/s

View exact numbers

Test name	Executions per second
✓ substring	61,709,244 Ops/sec
regex	2,179,742 Ops/sec

Script Preparation code:

const link = "https://stats.nba.com";
const linkRegex = new RegExp(/^(http|www)/i);

Tests:

regex
const link = "https://stats.nba.com"; const linkRegex = new RegExp(/^(http|www)/i); if(link.match(linkRegex) !== null){}
substring
const link = "https://stats.nba.com"; const start = link.substring(0,3); if(start === 'htt' || start === 'www'){}