Benchmark: FlatMap method vs for loop (small sample)

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var arr = new Array(100).fill(1);

Tests:

Flatmap
arr.flatMap(() => [1, 2]);
Loop
const n = arr.length; const acc = new Array(n * 2); for (let i = 0; i < n; i++){ const x = arr[i]; acc[i * 2] = x; acc[i * 2 + 1] = x * 2; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Flatmap
Loop

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Windows

Loop

6.5M/s

Flatmap

585K/s

View exact numbers

Test name	Executions per second
✓ Loop	6,483,140 Ops/sec
Flatmap	585,092 Ops/sec

FlatMap method vs for loop (small sample) (version: 1)