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/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

indexOf

161.8M/s

includes

161.5M/s

Strict Equal

160.3M/s

Equal

156.4M/s

regex

13.6M/s

View exact numbers

Test name	Executions per second
✓ indexOf	161,750,400 Ops/sec
includes	161,484,624 Ops/sec
Strict Equal	160,323,328 Ops/sec
Equal	156,362,912 Ops/sec
regex	13,560,292 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'