Run results for: hasown vs undefined - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
hasown existing	0.0 Ops/sec
hasown missing	0.0 Ops/sec
undefined existing	14042469.0 Ops/sec
undefined missing	14524279.0 Ops/sec

Tests:

hasown existing
const data = { foo: 3, }; let res = Object.hasOwn(data, foo);
hasown missing
const data = { foo: 3, }; let res = Object.hasOwn(data, bar);
undefined existing
const data = { foo: 3, }; let res = data.foo === undefined;
undefined missing
const data = { foo: 3, }; let res = data.bar === undefined;

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