Benchmark: Concat vs foreach vs for

Tests:

Concat
const items = Array.from(Array(40000).keys()); const items2 = Array.from(Array(40000).keys()); const items3 = items.concat(items2);
for i
const p1 = Array.from(Array(40000).keys()); const p2 = Array.from(Array(40000).keys()); const p2Length = p2.length; const p1Length = p1.length; p1.length = p1Length + p2Length; for (let i = 0; i < p2Length; i++) { p1[p1Length + i] = p2[i]; }
for of
const items = Array.from(Array(40000).keys()); const items2 = Array.from(Array(40000).keys()); for (const element of items) { items2.push(element); }

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser/OS: Chrome 118 on Mac OS X 10.15.7

Concat vs foreach vs for (version: 0)