Run results for: filter + join vs for + concat

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser: Firefox 127

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
filter + join	2410646.0 Ops/sec
for	4221223.5 Ops/sec

Script Preparation code:

var arr = ["abc","123","fghfg","fdgfdgfd","dgfdgfdgfd","234344",false,"",undefined,34,"fdgfdg"]

Tests:

filter + join
const result = arr.filter(Boolean).join(" ");
for
let str = ""; for (let i = 0; i < arr.length; i++) { if (Boolean(arr[i])) { str += arr[i] + " "; } }