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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 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 133
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Self comparison
10.8M/s
Number.isNaN
10.8M/s
isNaN
10.6M/s
cachedIsNaN
10.5M/s
View exact numbers
Test name
Executions per second
✓
Self comparison
10,813,047 Ops/sec
Number.isNaN
10,789,365 Ops/sec
isNaN
10,631,133 Ops/sec
cachedIsNaN
10,539,532 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