A thorough React developer roadmap for 2024 that addresses all aspects of React and beyond.
0. Before you start React
You should know and be comfortable with all of the following:
- 
- HTML Elements, Attributes, Headings, Paragraphs, Colors & Styles
 - HTML Links, Images, Tables, Lists, Block & Inline, Div, Classes, Id
 - HTML Forms
 - HTML Layout, Responsiveness & Semantic
 
 - 
- CSS Basics - Syntax, Selectors, Colors, Backgrounds, Borders, Margin, Padding, Height/Width, Box Model, Outline, Text, Fonts, Links etc.
 - CSS More - Lists, Tables, Display, Position, z-index, Overflow, Float, Inline Block, Align, Combinators, Pseudo-classes & elements, Opacity etc.
 - CSS Forms & Layouts
 - CSS Flexbox
 - CSS Grid
 - Advanced CSS - CSS Units, Shadows, Gradients, Transitions, Animations, Specificity etc.
 
 - 
- Tailwind Utilities
 - Responsive Variants
 - Hover, focus and other states
 - Dark Mode variant
 - Tailwind Directives
 - Tailwind Configurations
 - Theme Configurations
 - Tailwind cn() utility
 
 - 
Document Object Model (DOM)
 - 
- JS Basics - Statements, Expressions, Syntax, Variables, Operators, Data Types, Functions, Objects, Arrays, Events, Array and String Methods, Object Methods, Date, Conditionals, Error Handling, JavaScript OOP - classes and inheritance and Debugging
 - JS Web APIs - Forms, History, Geolocation, Storage, Worker and Fetch API
 - JS JSON
 
 - 
- Solid JS Concepts - Scope, Hosting, Execution Context, Closures, Prototype, Recursion, Primitive vs Reference Data Types, Currying, Intersection Observer, Memoization, Event Propagation, Debounce etc.
 - Asynchronous JavaScript - Callbacks, Promises and async-await
 
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- Different ES6+ JS Syntaxes and concepts eg. Arrow function, Truthy/Falsy values, Ternary Operator, Different Array methods like find, filter, map, reduce, slice, splice, push, pop, concat, different looping strategies, Spread & Rest Operator, Array and Object Destructuring, Imports/Exports syntax, Template Literals, Sorting etc.
 
 
1. React Fundamentals
You should know and be comfortable with all of the following:
- 
Getting Started with React
- Introduction to React - Why React - Comparison with Vanilla JS
 - React Installation & Editor Setup with Vite
 - How React works - Virtual DOM
 - Basics of React Components
 - Basics of JSX: React's Markup
 - JavaScript in JSX
 - Passing Props to Components
 - Conditional Rendering
 - Rendering Lists
 - Pure Components
 - How to split larger components into smaller ones
 
 - 
Adding Interactivity
- Responding to Events - Event Handlers
 - Understanding States - React Component's Memory - useState
 - How State works in React
 - How Rendering works in React
 - Updating complex states immutably in React
 
 - 
React State Management Deep Dive
- Declarative vs Imperative UI
 - Thinking UI Declaratively
 - Finding & Structuring React States
 - Connecting Event Handlers to React
 - Sharing State between components
 - Lifting State up
 - Extracting State Logic into Reducers
 - useReducer Hook
 - How to use Immer with React for concised immutable State Update
 - Passing Data Deeply inside React Components
 - Avoiding Prop Drilling - Context API & useContext Hook
 - Combine context and reducer to write scalable code
 
 
2. Advanced React
- Referencing values with Refs - useRef hook
 - Manipulating the DOM with Refs
 - Synchronizing with Effects - useEffect hook
 - Separating events from Effects
 - Removing Effect Dependencies
 - Performance optimization with useCallback and useMemo hook
 - Reusing logic with Custom Hooks
 - Calling APIs from Back-end with React
 
3. Advanced State Management
4. Styling Solutions
- Tailwind
 - CSS Modules
 - Styled Components
 - React UI Component Library - Shadcn
 - React UI Component Library - Keep React
 - Material UI
 - Chakra UI
 - Ant Design
 
5. React Ecosystem & Use Cases
- 
API Request with Axios in React
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React Suspense & Error Boundaries
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React Lazy Load
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React Infinite Scroll
 - 
Uncommon React Hooks - useDebugValue, useDeferredValue, useId, useImperativeHandle, useInsertionEffect, useLayoutEffect and useTransition
 - 
React Authentication
- How to handle user sign in (email, password, JWT)
 - How to handle access tokens and token refreshes
 - Social sign in (Google, Facebook, GitHub, etc.)
 - Using Supabase
 - Using Firebase
 - Using Clerk
 
 - 
Form Handling in React
- How to validate user input in forms (emails, passwords, etc.)
 - How to send form data to server
 - How to handle file uploads
 - Using React Hook Form
 - Using Formik
 
 - 
- Understanding why accessibility is important
 - Using semantic HTML
 - How to implement keyboard navigation
 - How to add aria labels
 - Using React Aria
 
 - 
Testing
 
6. React Frameworks
You should have worked with one of the following:
7. Beyond React
- Team player
- How to work within a team
 - How to perform code reviews
 - How to give and receive feedback
 
 - Efficiency
- How to prioritise tasks
 - How to handle tech debt
 - How to meet deadlines and goals
 
 - Continuous Learning
- How to continuously learn and grow
 - How to stay up to date with your skills
 
 - Networking & Communication - Going to meetups or events - Contributing to open source projects - Networking within the company you work in
 
Some free and paid resources from Learn with Sumit that might help you achieve your goal to become a React Developer
- Think in a React way: Free React Starter Course
 - JavaScript Beginners Course
 - DOM Course
 - Think in a JavaScript way - Advanced Conceptual JavaScript Course
 - Modern JavaScript Course
 - CSS Grid
 - CSS Flexbox
 - Tailwind CSS Course
 - Reactive Accelerator: React-Next.js Course
 - Think in a Redux way - Redux paid course