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Run results for:
Spread operator vs Object.assign vs Object.create
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<iframe src="https://measurethat.net/Embed?id=501693" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36
Browser:
Chrome 118
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test Spread operator
171.2M/s
Test Object.assign
6.2M/s
Test Object.create
1.3M/s
View exact numbers
Test name
Executions per second
✓
Test Spread operator
171,179,328 Ops/sec
Test Object.assign
6,156,952 Ops/sec
Test Object.create
1,318,593 Ops/sec
Script Preparation code:
for (i = 0; i < 10; i++) {}
Tests:
Test Spread operator
const firstObject = { sampleData: 'Hello world', sampleMethod: () => { return true; } }; const secondObject = {...firstObject};
Test Object.create
const firstObject = { sampleData: 'Hello world', sampleMethod: () => { return true; } }; const secondObject = Object.create(Object.getPrototypeOf(firstObject), Object.getOwnPropertyDescriptors(firstObject));
Test Object.assign
const firstObject = { sampleData: 'Hello world', sampleMethod: () => { return true; } }; const secondObject = Object.assign({}, firstObject); Object.setPrototypeOf(secondObject, Object.getPrototypeOf(firstObject));