Run results for: for of vs filter().map()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

for of

171.8M/s

filter().map()

542/s

View exact numbers

Test name	Executions per second
✓ for of	171,837,488 Ops/sec
filter().map()	542 Ops/sec

Script Preparation code:

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

Tests:

filter().map()
arr.filter(x => x % 3).map(x => x/100)
for of
let result = []; for (const x of result) { if (x % 3) { result.push(x/100); } }