React
Build fast, interactive UIs with reusable components, efficient updates, and just enough abstraction to make you feel productive when you're not.
Mildly opinionated description from ChatGPT
React is a JavaScript library for building user interfaces without crying every time the page reloads. It lets you break your app into reusable components, keep your UI in sync with your data, and pretend state management is under control. Originally made by Facebook, now maintained by the internet at large, React powers everything from tiny side projects to apps that absolutely should have better loading states.
Something else also generated by ChatGPT
Under the hood, React works by maintaining a virtual DOM, which is a polite lie that says “we’ll update the page efficiently this time.” When state changes, React figures out the smallest number of things to re-render so your app doesn’t combust. You write components as functions, sprinkle in hooks like useState and useEffect, and trust the dependency array even though it has betrayed you before. It’s declarative, component-based, and extremely confident you know what you’re doing.