Run results for: JavaScript spread operator vs Object.assign performance - Kien Nguyen

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Using Object.assign	57280848.0 Ops/sec
Using the spread operator	59599672.0 Ops/sec

Tests:

Using Object.assign
const finalObject = Object.assign({}, document.body);
AخA

const finalObject = Object.assign({}, document.body);
Using the spread operator
const finalObject = {...document.body};
x

const finalObject = {...document.body};