React.js Tutorial
Lesson 8/100

Tutorials React.js Tutorial

JSX Attributes — Complete Guide

JSX Attributes — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of React.js Tutorial on Toolliyo Academy.

8 min read Updated 6/23/2026
On this page

React.js Tutorial · Lesson 8 of 100

JSX Attributes

Beginner → Intermediate → Advanced → Professional

Beginner · 1 — Learn by example · ~6 min · Module 1: React Basics & Setup

What is this?

JSX attributes set HTML properties on elements — but with React names. class becomes className, for becomes htmlFor, and style takes a JavaScript object.

Why should you care?

class is a reserved word in JavaScript, so React uses className. Getting attributes right is required for CSS and forms.

See it live — copy this example

Paste into src/App.jsx (or the file noted in the steps). Save and watch the browser update.

function Banner() {
  return (
    <div className="banner" style={{ background: '#e3f2fd', padding: '12px' }}>
      <label htmlFor="email">Email</label>
      <input id="email" type="email" placeholder="you@example.com" />
    </div>
  );
}

Run Example »

Edit the code and click Run to see the result update live.

Code
Result

What happened?

  • className applies CSS classes.
  • style={{ }} uses double braces — outer for JSX, inner object for CSS.
  • htmlFor links label to input id.

Try it yourself

  1. Add className to a div and style it in index.css.
  2. Set style={{ color: "red" }} on a heading.
  3. Add placeholder and disabled attributes on a button.
  4. Change text or labels in the example and save — watch the browser update.
  5. Break the code on purpose (remove a bracket), read the error message, then fix it.

Remember

className not class. style={{ property: value }}. htmlFor not for on labels.

React.js Tutorial
Course syllabus
Module 1: React Basics & Setup Introduction to React — Complete Guide React Get Started — Complete Guide Your First React App — Complete Guide React Render HTML — Complete Guide ES6 for React — Complete Guide JSX Intro — Complete Guide JSX Expressions — Complete Guide JSX Attributes — Complete Guide JSX If Statements — Complete Guide React Components — Complete Guide
Module 2: Props, Events & Lists React Props — Complete Guide Props Destructuring — Complete Guide Props Children — Complete Guide React Events — Complete Guide React Conditionals — Complete Guide React Lists & Keys — Complete Guide React CSS Styling — Complete Guide Controlled Forms — Complete Guide Form Submit — Complete Guide Multiple Form Inputs — Complete Guide
Module 3: Forms & Hooks Textarea & Select — Complete Guide Checkbox & Radio — Complete Guide useState — Complete Guide useEffect — Complete Guide useRef — Complete Guide useContext — Complete Guide useReducer — Complete Guide useCallback — Complete Guide useMemo — Complete Guide Custom Hooks — Complete Guide
Module 4: Routing & Data React Router — Complete Guide Nested Routing — Complete Guide Protected Routes — Complete Guide Lazy Routes — Complete Guide React Portals — Complete Guide Fetch API — Complete Guide Axios — Complete Guide Error Handling — Complete Guide Context API — Complete Guide React Hook Form — Complete Guide
Module 5: State & Authentication Form Validation — Complete Guide Async Forms — Complete Guide Zustand — Complete Guide Redux Toolkit — Complete Guide TanStack Query — Complete Guide Optimistic Updates — Complete Guide Query Caching — Complete Guide Authentication Flows — Complete Guide React 19 Features — Complete Guide package.json & Tooling — Complete Guide
Module 6: Architecture & React 19 Enterprise Folder Structure — Complete Guide Enterprise State Architecture — Complete Guide Enterprise Form Architecture — Complete Guide Actions — Complete Guide use() — Complete Guide Suspense — Complete Guide Concurrent Rendering — Complete Guide React Compiler — Complete Guide Server Components — Complete Guide Streaming Rendering — Complete Guide
Module 7: Performance Hydration — Complete Guide Memoization — Complete Guide React.memo — Complete Guide Lazy Loading — Complete Guide Code Splitting — Complete Guide Virtualization — Complete Guide Bundle Optimization — Complete Guide Web Vitals — Complete Guide Frontend Performance Tuning — Complete Guide Micro Frontends — Complete Guide
Module 8: Full-Stack & Real-Time Enterprise Scaling — Complete Guide SignalR — Complete Guide WebSockets — Complete Guide SSE — Complete Guide Next.js — Complete Guide SSR — Complete Guide SSG — Complete Guide ISR — Complete Guide ASP.NET Core Integration — Complete Guide Full-stack Enterprise Architecture — Complete Guide
Module 9: Testing & Deployment XSS Protection — Complete Guide Secure Authentication — Complete Guide Jest — Complete Guide React Testing Library — Complete Guide Cypress — Complete Guide Playwright — Complete Guide Docker Deployment — Complete Guide Kubernetes — Complete Guide Azure Deployment — Complete Guide CI/CD Pipelines — Complete Guide
Module 10: ShopCart Projects Todo App Project — Complete Guide E-Commerce Storefront Project — Complete Guide SaaS Admin Panel Project — Complete Guide Banking Dashboard Project — Complete Guide LMS Course Player Project — Complete Guide Healthcare Portal Project — Complete Guide Real-Time Monitoring Project — Complete Guide Multi-Tenant SaaS Project — Complete Guide Enterprise CRM Project — Complete Guide Micro Frontend Platform Project — Complete Guide
Toolliyo Assistant
Ask about tutorials, ebooks, training, pricing, mentor services, and support. I use public site content only—not admin or internal tools.

care@toolliyo.com

Need callback? Share your details