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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=609111" 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/18.3.1 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
typeof
295.5M/s
hasOwnProperty
222.4M/s
hasOwn
56.1M/s
View exact numbers
Test name
Executions per second
✓
typeof
295,459,712 Ops/sec
hasOwnProperty
222,367,232 Ops/sec
hasOwn
56,060,352 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' );