Run results for: Search in array of strings

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0

Browser: Firefox 87

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
IndexOf	121755.4 Ops/sec
Includes	117166.9 Ops/sec
ForEach with === with length check	67874.5 Ops/sec
ForEach with ===	68447.0 Ops/sec
ForEach with ==	54336.0 Ops/sec

Script Preparation code:

var str = '1234567';
var arr = [];
for (i = 0; i < 1000; i++) {
   arr.push([...Array(4 + Math.floor(Math.random() * 8))].map(i => (~~(Math.random() * 36)).toString(36)).join(''))
}

Tests:

IndexOf
arr.indexOf(str)
Includes
arr.includes(str)
ForEach with === with length check
arr.forEach(s => { if (s.length === str.length && s === str) console.log('Finded!'); })
ForEach with ===
arr.forEach(s => { if (s === str) console.log('Finded!'); })
ForEach with ==
arr.forEach(s => { if (s == str) console.log('Finded!'); })

Run results for: Search in array of strings

IndexOf

Includes

ForEach with === with length check

ForEach with ===

ForEach with ==