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XCODX · Learn to Code

React Learn to Code

Learn React from the ground up with clear explanations and runnable examples.

All React learn to code pages

React State & Hooks — The Basics

Build a real mental model of React state: what state is, how the useState hook returns a value and a setter, why calling the setter triggers a re-render, updating state immutably, and how state differs from props.

Learn React step by step. These tutorials cover the fundamentals with clear explanations and runnable examples, building from the basics toward confident, working code.

Start with a topic below, and run everything in the React online compiler as you go.

Frequently asked questions

Do I need to know JavaScript before React?
Yes — React is built on JavaScript. If you are comfortable with functions, objects, and arrays, you are ready. These guides start from first principles with a live, editable preview.
Can I run these React examples without installing anything?
Yes. Every example is an embedded playground that compiles and runs React in the browser — no local setup, no build step.