Run results for: for length vs for in

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.6

Device Platform: Mobile

Date tested: one year ago

for length

8K/s

for in

6K/s

View exact numbers

Test name	Executions per second
✓ for length	8,013 Ops/sec
for in	5,717 Ops/sec

Script Preparation code:

var arr=Array(1000).fill('');var arrc=[];

Tests: