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Run results for:
Object.hasOwn vs 'in' performance v2
comparing Object.hasOwn(obj, "foo") with "foo" in obj
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36
Browser:
Chrome 152
Operating system:
Windows
Device Platform:
Desktop
Date tested:
23 days ago
in
114.8M/s
Object.hasOwn
82.4M/s
View exact numbers
Test name
Executions per second
✓
in
114,788,432 Ops/sec
Object.hasOwn
82,360,696 Ops/sec
Script Preparation code:
obj = {a: 42, b:66, c: 88}
Tests:
Object.hasOwn
Object.hasOwn(obj, 'b')
in
'b' in obj