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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=536095" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36 Edg/127.0.0.0
Browser:
Chrome 127
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
typeof
19.0M/s
hasOwnProperty
17.5M/s
hasOwn
7.5M/s
View exact numbers
Test name
Executions per second
✓
typeof
19,047,404 Ops/sec
hasOwnProperty
17,528,968 Ops/sec
hasOwn
7,502,924 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' );