This has been posted many times. And each time, I never truly understand what's wrong with w3schools. I used it when I was much younger (although I've switched to MDN now) and I haven't found very much wrong with it. Can someone please enlighten me?
It seems that W3Fools has changed recently since it was popularized in 2011, but the page used to have a very lengthy list about the recommended bad practices or flat out inaccuracies of W3Schools.