Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
Object values: Object.entries VS Object.keys VS Object.keys with extra array VS Object.entries without array VS Object values: Object.entries loop for
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=496867" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Object.entries
105964.3 Ops/sec
Object.keys
130088.8 Ops/sec
Object.keys with extra array
80992.6 Ops/sec
Object.entries without array
91737.0 Ops/sec
Object.entries for loop
110303.4 Ops/sec
Script Preparation code:
function makeid() { var text = ""; var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; for (var i = 0; i < 5; i++) text += possible.charAt(Math.floor(Math.random() * possible.length)); return text; } window.parentObj = {}; for (let i = 0; i < 100; i++) { window.parentObj[makeid()] = { innerVal: makeid() }; }
Tests:
Object.entries
const newObj = {}; Object.entries(window.parentObj).forEach(([k, v], i) => { if ((i % 2) === 0) { newObj[k] = v; } });
Object.keys
const newObj = {}; Object.keys(window.parentObj).forEach((k, i) => { if ((i % 2) === 0) { newObj[k] = window.parentObj[k]; } });
Object.keys with extra array
const newObj = {}; Object.keys(window.parentObj).forEach((k, i) => { const [extraK, v] = [k, window.parentObj[k]] if ((i % 2) === 0) { newObj[extraK] = v; } });
Object.entries without array
const newObj = {}; Object.entries(window.parentObj).forEach((keyAndVal, i) => { if ((i % 2) === 0) { newObj[keyAndVal[0]] = keyAndVal[1]; } });
Object.entries for loop
const newObj = {}; let i = 0; for(const k of Object.keys(window.parentObj)){ if ((i % 2) === 0) { newObj[k] = window.parentObj[k]; } i++; }