Run results for: .forEach vs for const of

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

.forEach

23K/s

for const of

22K/s

View exact numbers

Test name	Executions per second
✓ .forEach	22,660 Ops/sec
for const of	22,489 Ops/sec

Script Preparation code:

var a = [...Array(10000).keys()];
var sum = 0;

Tests:

.forEach
a.forEach(i => sum += i)
for const of
for (const i of a) { sum += i; }