Run results for: Delete vs destructure for objects in loop

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

delete

3K/s

Rest object

16/s

View exact numbers

Test name	Executions per second
✓ delete	3,492 Ops/sec
Rest object	16 Ops/sec

Script Preparation code:

var obj = {}
for (let i = 0; i < 1000; i++) {
	obj[`test_${i}`] = `value_${i}`;
}

Tests:

delete
const newObject = { ...obj }; Object.keys(newObject).forEach(key => { delete newObject[key]; });
Rest object
let newObject = obj; Object.keys(newObject).forEach(property => { let {[property]:ignored, ...rest} = newObject newObject = rest; });