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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 (X11; Ubuntu; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0
Browser:
Firefox 138
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Object.hasOwn
953996800.0 Ops/sec
in
958748864.0 Ops/sec
Script Preparation code:
obj = {a: 42, b:66, c: 88}
Tests:
Object.hasOwn
Object.hasOwn(obj, 'b')
in
'b' in obj