Run results for: Sealed object access vs ordinary object access

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Ordinary object access

3.2M/s

Sealed object access

3.2M/s

View exact numbers

Test name	Executions per second
✓ Ordinary object access	3,223,506 Ops/sec
Sealed object access	3,210,108 Ops/sec

Script Preparation code:

const obj = {a: 1, b: 2, c: 3, d: 4};
const sealedObj = Object.seal({a: 1, b: 2, c: 3, d: 4, __proto__: null});

let v = null;

Tests:

Sealed object access
v = sealedObj.a; v = sealedObj.b; v = sealedObj.c; v = sealedObj.d;
Ordinary object access
v = obj.a; v = obj.b; v = obj.c; v = obj.d;