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/148.0.0.0 Safari/537.36

Browser: Chrome 148

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

flatMap speed

803/s

filter map speed

718/s

View exact numbers

Test name	Executions per second
✓ flatMap speed	803 Ops/sec
filter map speed	718 Ops/sec

Script Preparation code:

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

Tests: