Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
Object.entries vs for..in
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=598571" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:137.0) Gecko/20100101 Firefox/137.0
Browser:
Firefox 137
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Object.entries (forEach)
39.1 Ops/sec
for..in
39.0 Ops/sec
Object.entries (for loop)
36.5 Ops/sec
Script Preparation code:
var obj = { a: 1, b: 2, c: 3, d: 4, 0: 'a', 1: 'b', str: 'long string', nested: { nested: 0 }, hello: 55.5 }; for (let i = 10; i < 10000; i++) { obj[""+i] = "test" }
Tests:
Object.entries (forEach)
Object.entries(obj).forEach((key, value) => console.log(key, value));
for..in
for (let key in obj) { if (obj.hasOwnProperty(key)) console.log(key, obj[key]); }
Object.entries (for loop)
for (let entries = Object.entries(obj), i = entries.length - 1, entry = entries[i]; i >= 0; entry = entries[i--]) { console.log(entry[0], entry[1]) }