Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
typeof x === 'number' vs isNaN(x) F302
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=574309" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
isNaNx
135.5M/s
isNaNx2
135.2M/s
isNaN2
32.3M/s
isNaN
18.0M/s
View exact numbers
Test name
Executions per second
✓
isNaNx
135,472,512 Ops/sec
isNaNx2
135,150,816 Ops/sec
isNaN2
32,341,288 Ops/sec
isNaN
17,953,822 Ops/sec
Script Preparation code:
var myNum = Math.random(); var myString = Math.round(Math.random()*999+888).toString(16); var isNaNx = Number.isNaN;
Tests:
isNaNx
let u = 0; if(isNaNx(myNum))u++; if(isNaNx(myString))u++; if(isNaNx(myNum))u++; if(isNaNx(myString))u++;
isNaN
let u = 0; if(isNaN(myNum))u++; if(isNaN(myString))u++; if(isNaN(myNum))u++; if(isNaN(myString))u++;
isNaN2
let u = 0; const p = (isNaN(myNum) ? 1 : 0) + (isNaN(myString) ? 2 : 0); if(p&1)u++; if(p&2)u++; if(p&1)u++; if(p&2)u++;
isNaNx2
let u = 0; const p = (isNaNx(myNum) ? 1 : 0) + (isNaNx(myString) ? 2 : 0); if(p&1)u++; if(p&2)u++; if(p&1)u++; if(p&2)u++;