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Run results for:
isNaN vs Number.isNaN vs Self comparison
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36
Browser:
Chrome 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
4 months ago
Test name
Executions per second
isNaN
224803632.0 Ops/sec
Number.isNaN
216775696.0 Ops/sec
cachedIsNaN
211760080.0 Ops/sec
Self comparison
207475216.0 Ops/sec
Script Preparation code:
const a = 0, { isNaN: cachedIsNaN } = Number
Tests:
isNaN
isNaN(a)
Number.isNaN
Number.isNaN(a)
cachedIsNaN
cachedIsNaN(a)
Self comparison
a !== a