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Run results for:
Object.entries vs Object.keys vs for...in
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=617713" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 26
Operating system:
iOS 18.6
Device Platform:
Mobile
Date tested:
10 months ago
for...in
17K/s
Object.entries
17K/s
Object.keys
17K/s
View exact numbers
Test name
Executions per second
✓
for...in
17,254 Ops/sec
Object.entries
16,988 Ops/sec
Object.keys
16,948 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]);