Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
Object.entries vs Object.keys vs for...in
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=615113" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 18
Operating system:
iOS 18.5
Device Platform:
Mobile
Date tested:
one year ago
Object.entries
25K/s
Object.keys
24K/s
for...in
24K/s
View exact numbers
Test name
Executions per second
✓
Object.entries
25,099 Ops/sec
Object.keys
24,178 Ops/sec
for...in
24,078 Ops/sec
Script Preparation code:
var obj = {}; for (let i = 0; i < 100; i++) { obj[`k_${i}`] = i; }
Tests:
Object.entries
for (const [k, v] of Object.entries(obj)) console.log(k, v);
Object.keys
for (const k of Object.keys(obj)) console.log(k, obj[k]);
for...in
for (const k in obj) console.log(k, obj[k]);