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

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));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for-in
Object.keys
Object.values

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 days ago)

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/OS: Yandex Browser 23 on Windows

View result in a separate tab

Test name	Executions per second
for-in	31.1 Ops/sec
Object.keys	34.3 Ops/sec
Object.values	34.2 Ops/sec

for-in vs object.keys vs object.values for objects perf 5 (version: 1)

Comparing performance of: for-in vs Object.keys vs Object.values

Created: one year ago by: Registered User

Jump to the latest result

for-in

Object.keys

Object.values

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A