Run results for: for length vs for in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0

Browser: Firefox 120

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

for length

29K/s

for in

1K/s

View exact numbers

Test name	Executions per second
✓ for length	29,016 Ops/sec
for in	1,229 Ops/sec

Script Preparation code:

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

Tests: