Run results for: string.includes vs string.indexOf vs regex.test(string) vs == vs ===

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

includes

37.2M/s

Equal

37.0M/s

indexOf

36.9M/s

Strict Equal

36.7M/s

regex

10.8M/s

View exact numbers

Test name	Executions per second
✓ includes	37,243,224 Ops/sec
Equal	36,998,396 Ops/sec
indexOf	36,877,292 Ops/sec
Strict Equal	36,684,608 Ops/sec
regex	10,791,070 Ops/sec

Script Preparation code:

var string = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'

Tests:

indexOf
string.indexOf('ullamco')
includes
string.includes('ullamco')
regex
/ullamco/.test(string)
Equal
string == 'ullamco'
Strict Equal
string === 'ullamco'