Run results for: javascript array.filter().map() vs array.flatMap()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36

Browser: Chrome 150

Operating system: Windows

Device Platform: Desktop

Date tested: 28 days ago

filter map speed

401/s

flatMap speed

279/s

View exact numbers

Test name	Executions per second
✓ filter map speed	401 Ops/sec
flatMap speed	279 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = i++;

Tests: