2 ms·

Also in logic. Not something is never equal to not the same thing. A bird is not a rock. A computer is also not a rock. Clearly not equal to each other.

• mxfh 12y ago
  I think people confuse the nature of NaN with the result of isNaN() a lot, this being the source of this confusion.
  • mjevans 12y ago
    It's easier if you think of it like a database NULL.