A plague on both houses. I'm exaggerating, but a good and reliable
example-based reference documentation organised by
use-case is what I need in 90% of cases (a comprehensive index of methods/params/etc makes up the other 10%). Neither W3Schools or MDN (nor most other docs) get this right.
Which is why Stack Overflow is increasingly taking the load of being my reference docs. That's scary, since I also have to filter out the untruth as I read, but the immediacy of its usefulness is hard to deny. It is effectively a massive discoverable library of examples organised by use-case.
