Run results for: for-in vs object.keys vs object.values for objects perf 5

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.713 YaBrowser/23.9.5.713 (corp) Yowser/2.5 Safari/537.36

Browser: Yandex Browser 23

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Object.keys

34/s

Object.values

34/s

for-in

31/s

View exact numbers

Test name	Executions per second
✓ Object.keys	34 Ops/sec
Object.values	34 Ops/sec
for-in	31 Ops/sec

Script Preparation code:

var obj =[...new Array(10000)].reduce((o,_,i)=>{
  	o[i+'-id']={id:i};
	return o;
},{});

Tests:

for-in
for (var key in obj) { console.log(obj[key].id); }
Object.keys
Object.keys(obj).forEach(key => console.log(obj[key].id));
Object.values
Object.values(obj).forEach(n => console.log(n.id));