I find w3schools dumbs it down a bit too much in certain cases and sort of gets in the way of finding the info you want. Compare https://www.w3schools.com/jsre

I find w3schools dumbs it down a bit too much in certain cases and sort of gets in the way of finding the info you want. Compare https://www.w3schools.com/jsref/jsref_substring.asp https://www.w3schools.com/jsref/jsref_substring.asp with https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substring https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... The MDN doc allows you to run the code there and then - no jumping around to a "Try it yourself" page. Also, MDN gets to the syntax quickly - with w3schools, I have to search for the syntax in amongst a bunch of other junk that I really don't care about at that moment (like browser compatibility). To a seasoned dev, MDN feels clear, w3s feels like a confusing mess. Maybe for early stage devs it's the other way round?