Run results for: ForIn vs ForEach

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 Edg/110.0.1587.63

Browser: Chrome 110

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

   var arr = [];
   for (var i = 0; i < 10000; i++) {
       arr[i] = i;
   }

   function someFn(i) {
       return i * 2;
   }

Tests: