NaN problem in JS

Question

Why the result false

a = isNaN(Number("abc")) // return true
b = (Number("abc")==NaN) // return false

Why a is true and b is false, Number("abc"), return NaN but why b return false.

If we make another code like this

c = NaN==NaN // return false

Will return false, idk whats wrong

https://code.sololearn.com/cqmB9liD7YM0/?ref=app

Answer 1

Check de MDN doc of NaN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN

Theres a section labeled as Testing against NaN.

Answer 2

Arturop oh ok, thanks for answer my question 😊