REACTJS • COMPLETE LEARNING PATH
ReactJS notes, examples and assignments.
Start with JSX, build reusable components, and work through hooks, forms, routing and Redux. Each lesson has its own page with explanations, worked code and your course exercises.Core ReactJS
JSX literals expressions
Turn JavaScript values into readable UI.
Open lesson →JSX conditional Rendering
Choose the right output for every branch.
Open lesson →JSX UI Generation
Transform arrays into lists, tables and galleries.
Open lesson →JSX Conditional UI Rendering
Separate selecting records from selecting their appearance.
Open lesson →JSX Styling
Apply static and data-driven styles to generated UI.
Open lesson →JSX Conditional Styling
Represent data through colors, classes and rating indicators.
Open lesson →JSX eventhandling
Connect browser events to state changes.
Open lesson →React Component
Extract named, reusable pieces of a screen.
Open lesson →React Component List and Table UI Generation
Compose record components inside collection components.
Open lesson →React Component Conditional Rendering
Build components that explain which records qualify.
Open lesson →React Component Styling
Keep component appearance consistent across instances.
Open lesson →Eventhandling in React Component
Let components report user intent through callbacks.
Open lesson →Reactive variable with useState - state variable
Store the smallest data needed to reproduce the screen.
Open lesson →React Props
Pass data down and pass callbacks for actions.
Open lesson →Reusability with props
Reuse behavior while keeping state ownership deliberate.
Open lesson →Refactoring with prop Drilling
Place shared state at the nearest common owner.
Open lesson →Performance Hooks in Refactoring
Measure repeated work before adding memoization.
Open lesson →Life cycle Hooks
Synchronize with timers and requests, and clean up after them.
Open lesson →React Advance Hooks
Choose refs, context and reducers for different responsibilities.
Open lesson →Custom hooks
Extract reusable stateful logic without sharing state accidentally.
Open lesson →State mangement Hooks useContext useReducer
Deliver shared state through context and update it with explicit actions.
Open lesson →ReactJS Form Handling Libraries
Track values, errors and submission through one coherent form model.
Open lesson →ReactJS Routing
Map URLs to pages, nested layouts and record details.
Open lesson →ReactJS Redux
Model shared application updates as state transitions.
Open lesson →ReactJS Redux Toolkit
Organize slices and manage server data with RTK Query.
Open lesson →Advanced ReactJS
Virtual DOM
Explain how React calculates a screen update and preserves component identity.
Open lesson →State Snapshots and Batching
Predict queued updates and avoid stale closures.
Open lesson →Effects, Cleanup and Race Conditions
Keep obsolete asynchronous work from replacing current results.
Open lesson →Profiling and Memoization
Measure component work before optimizing it.
Open lesson →Lazy Loading and Suspense
Load a feature on demand and show a purposeful fallback.
Open lesson →Error Boundaries and Recovery
Contain a broken UI region and offer a deliberate retry.
Open lesson →Portals and Accessible Dialogs
Place overlays outside clipping containers while retaining React ownership.
Open lesson →Transitions and Deferred Rendering
Keep urgent inputs responsive while less urgent UI catches up.
Open lesson →Composition and Compound Components
Design flexible component APIs without duplicating markup.
Open lesson →External Stores and Browser Subscriptions
Read external state through a consistent subscription contract.
Open lesson →Server Rendering and Hydration
Understand the handoff from server HTML to interactive React.
Open lesson →