Run results for: delete vs null vs undefined vs void 0 vs Object.create(null) propertie

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

null

3.0M/s

undefined

1.0M/s

delete

13K/s

View exact numbers

Tests:

null
for(let i = 0; i < 1000;i++) { let a = { a: 999, b: 3000 } a.a = null; a.b = null; }
undefined
for(var i = 0; i < 1000;i++) { let a = { a: 999, b: 3000 } a.a = undefined; a.b = undefined; }
delete
for(var i = 0; i < 1000;i++) { let a = { a: 999, b: 3000 } delete a.a; delete a.b; }