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Run results for:
hasOwn vs hasOwnProperty vs typeof
Object lookup performance
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=487860" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
typeof
13.3M/s
hasOwnProperty
13.2M/s
hasOwn
5.1M/s
View exact numbers
Test name
Executions per second
✓
typeof
13,258,704 Ops/sec
hasOwnProperty
13,168,009 Ops/sec
hasOwn
5,064,419 Ops/sec
Script Preparation code:
var obj = { a: 1, b: 2, c: 3, d: 4, e: 5 };
Tests:
typeof
typeof obj.d !== "undefined";
hasOwn
Object.hasOwn(obj, 'd')
hasOwnProperty
obj.hasOwnProperty( 'd' );