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Run results for:
Delete vs destructure for objects without mutating
Measure the performance of delete versus removing a prop from an object without mutating
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<iframe src="https://measurethat.net/Embed?id=557965" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 129
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
delete - assign
1265641.0 Ops/sec
Rest object
1643790.0 Ops/sec
delete - spread operator
1564101.2 Ops/sec
delete - JSON.stringify
1144551.6 Ops/sec
Script Preparation code:
var obj = { a:1, b:2, c:3 }
Tests:
delete - assign
const copy = Object.assign({}, obj); delete obj.a
Rest object
const { a, ...rest } = obj;
delete - spread operator
const copy = { ...obj } delete obj.a
delete - JSON.stringify
const copy = JSON.parse(JSON.stringify(obj)); delete obj.a