React in 100 Seconds
A crisp, high-signal intro to React's core model (components, props, hooks) โ worth it if front-end is on your radar.
TL;DR
- React turns UI into pure functions that return JSX (HTML + JavaScript).
- Props pass data in; the useState hook adds reactive local state.
- A minimal core plus a huge ecosystem (Next.js, Redux, etc.).
- One of the most in-demand front-end skills.
Action items
Section by section
- [0:00] What is React โ A JavaScript library from Facebook for building UIs from components.
- [0:17] Components, props & JSX โ Components are functions returning JSX; props pass data down.
- [0:33] State & hooks โ useState gives a component reactive internal state.
- [1:05] The ecosystem โ Routing, state management and more live in the surrounding ecosystem.