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Run results for:
in vs hasOwn
Object lookup performance Comparing performance of: in vs hasOwn
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<iframe src="https://measurethat.net/Embed?id=612121" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0
Browser:
Firefox 140
Operating system:
Windows
Device Platform:
Desktop
Date tested:
10 months ago
Test name
Executions per second
in
934940544.0 Ops/sec
hasOwn
783551552.0 Ops/sec
Script Preparation code:
var obj = { a: 1, b: 2, c: 3, d: 4, e: 5 };
Tests:
in
'd' in obj;
hasOwn
Object.hasOwn(obj, 'd');