Run results for: string includes vs foreach (split)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

string includes

10.4M/s

string foreach (split)

4.4M/s

View exact numbers

Test name	Executions per second
✓ string includes	10,423,830 Ops/sec
string foreach (split)	4,444,236 Ops/sec

Script Preparation code:

var arr1 = "string 1234"
var arr2 = ["A","B","C","D","a","b","c"]

Tests:

string includes
arr2.map(x => { if (arr1.includes(x)) x.disabled = true; return x; });
string foreach (split)
arr2.map(x => { arr1.split("").forEach(y => { if (x.value === y) x.disabled = true; }); return x; });