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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

flatMap speed

724/s

filter map speed

593/s

View exact numbers

Test name	Executions per second
✓ flatMap speed	724 Ops/sec
filter map speed	593 Ops/sec

Script Preparation code:

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

Tests: