Deep dive for fullstack devs on the W3C Geolocation API: how browsers derive a user’s position (lat/long/altitude/speed/heading) from GPS/Wi‑Fi/cellular/IP, how to request permission, fetch current location, and handle errors; best practices on UX, performance, and privacy; a travel site example showing localized content, deals, and weather; plus caveats like denied access, inaccuracy, and regulatory compliance.
