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thedom85/Kata_js_is_Really_NaN.js

Created July 21, 2022 08:05
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Kata js is Really NaN.
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Kata_js_is_Really_NaN.js
// https://www.codewars.com/kata/56c24c58e0c0f741d4001aef/train/javascript
const isReallyNaN = (val) => {
return Number.isNaN(val);
};
console.log(isReallyNaN(37), false)
console.log(isReallyNaN('37') , false)
console.log(isReallyNaN(NaN) , true)
console.log(isReallyNaN(undefined) , false)
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