React Documentation

The library for web and native user interfaces.

v19.0.0 420 pages indexed searchable · AI-grounded

Search React in Smart Stack Official docs ↗

What is React?

React is a JavaScript library for building user interfaces from components. Its declarative model, hooks, and one-way data flow make it the most widely deployed frontend library in the world.

Smart Stack indexes the official React documentation and keeps it current, so you can search it directly or ask questions in plain language. Because answers are grounded in the real pages — not a model's training data — you get correct, version-aware APIs instead of plausible-looking guesses.

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Ask anything about React

Get an answer grounded in the official React docs — and add the rest of your stack for integration-aware help.

>How do I get started with React?

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Works well with React

Add these alongside React for answers that understand how the pieces fit together.

Next.js

v15.1.0

The React framework for the web.

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v2.15.0

Build better websites with web standards.

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TanStack Query

v5.62.0

Powerful asynchronous state management for the web.

240 pages

Tailwind CSS

v4.0.0

A utility-first CSS framework for rapid UI development.

240 pages

Vite

v6.0.0

Next-generation frontend tooling.

220 pages

Vue

v3.5.0

The progressive JavaScript framework.

310 pages

React — FAQ

What is the latest version of React?

The latest version of React indexed in Smart Stack is 19.0.0. Smart Stack re-checks sources on a schedule, so answers stay current with releases rather than relying on a model's training cutoff.

Where can I find the official React documentation?

The official React documentation lives at https://react.dev/reference/react. Smart Stack indexes it so you can search across it — and the rest of your stack — and get AI answers grounded in those exact pages.

Can I search React docs together with the rest of my stack?

Yes. That's the core idea behind Smart Stack: add React to your stack alongside your other tools, and the AI answers questions using the official docs for everything you selected at once — no tab-switching.

Does Smart Stack hallucinate React APIs?

Smart Stack uses retrieval-augmented generation: it pulls relevant sections from the official React documentation and grounds the answer in them, which sharply reduces the made-up function signatures you get from ungrounded models.

What works well with React?

React is commonly used with tools in the frontend frameworks space and adjacent layers of the stack. Add them together in Smart Stack to get integration-aware answers that understand how they fit.