It will determine whether the provided value is NaN or not.
value
1.0.0
isNaN(NaN); // => true Copy
isNaN(NaN); // => true
isNaN(2); // => false Copy
isNaN(2); // => false
isNaN(undefined); // => false Copy
isNaN(undefined); // => false
It will determine whether the provided
valueis NaN or not.