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Run results for: isNaN vs regex test for stringify number check

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Run details:
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36
Chrome 107
Windows
Desktop
2 years ago
Test name Executions per second
regex 6586123.5 Ops/sec
isNan with parseInt 3280535.2 Ops/sec
isNan with Number 3412328.8 Ops/sec
Script Preparation code:
AخA
 
var value = "123"; 
var regex = /^\d+$/;
Tests:

  • regex

     
    regex.test(value)

  • isNan with parseInt

     
    isNaN(parseInt(value, 10))

  • isNan with Number

     
    isNaN(Number(value))