I recently discovered W3Schools and noticed it covers many different technologies. I'm currently focused on learning JavaScript and want to know whether W3Schools provides a strong enough foundation to move on to React or Node.js/Express later. Is it sufficient on its own, or should I combine it with other resources?
3 Answers
W3Schools can be useful for quickly checking syntax, but it probably shouldn’t be your main learning resource. MDN is a stronger reference, and structured paths such as The Odin Project or freeCodeCamp can give you more practice and project experience. Build small projects while studying instead of just copying examples.
It isn’t sufficient by itself for React or Node.js. First get comfortable with core JavaScript, the browser, asynchronous code, modules, and basic tooling. Then use a structured curriculum and build a few projects before moving into a framework or backend runtime.
The important thing is less about choosing one website and more about practicing. Use W3Schools if its explanations work for you, but check concepts against reliable documentation and make sure you can solve problems without relying on copy-and-paste examples.

W3Schools is fine for a quick lookup. Reading the relevant MDN pages while building something small will usually teach you more than following tutorials passively for weeks.