Can any explain?

Question

Let a = '50';
If(isNaN(a))
{
Console.log('not a number');
} else {
Console.log('yes number');
}
Answer is ; yes number.

Answer 1

It is just a counter intuitive JavaScript fact.

https://www.sololearn.com/post/133451/?ref=app
https://www.sololearn.com/post/133947/?ref=app