React - The Complete Guide with React Hook Redux in 4hr

Explore how let behaves in switch cases and learn to fix shadowing errors by wrapping cases in blocks to create proper scope, demonstrated with color and input examples.

Master template literals in JavaScript to format console output and embed variables within strings using backticks, avoiding plus signs and escaping with backslashes.

Discover arrow functions in React, using concise bodies for one-liners, leveraging implicit returns, and knowing when to omit braces or parentheses for single versus multiple parameters.

Define a class with weight, age, and a park method, create object copies, and extend an animal class to let a puppy dog inherit the eat method.

Master destructuring of objects and arrays to extract values directly, such as first name and age, and use rest or spread to access remaining elements.

Explore the difference between primitive and reference types, showing how primitives copy by value while objects copy by reference, and how to create independent copies with the spread operator.

Learn how default and named exports work in React, create components, export constants, and import with aliases to compose and reuse modules effectively.

Demonstrate how map applies a function to every element in an array, such as adding four to each phone number, offering a cleaner alternative to for loops.

Store jsx element to a variable and reuse it in tests to demonstrate component manipulation. Apply styles to the element and observe how tests change when pasted or updated.

Delete the header, logo, and unnecessary imports to prepare a card list. Copy and adapt card code, adjust CSS with a style object, and plan a future component refactor.

learn how to pass multiple props, including first name, last name, job title, and avatar, to a card component by wiring data and rendering the title and image.

Demonstrate using the children prop to render nested content inside a component, such as placing multiple buttons inside a cart by passing JSX between opening and closing tags.

Learn how passing a function to a component enables a button to update names via an onChangedName handler, with controlled updates to Ellen Smith, Dave, and John Doe.

bind an input field to state with an onChange handler and pass the value and handler to child components to enable two way binding and live name updates.

Fix the unique key error in React by assigning a unique key to each list item, avoid using index keys, and prefer a database-provided id.

Add an input field under each card to bind and update its name, using a change handler that copies the card and updates it by id without mutating the original.

Create a dynamic JavaScript button style that uses two conditions to change its background color from pink to red.

Explore dynamic styling with classes in React by updating a button’s color as cards are added or removed, switching to pink and red under specific conditions.

Extract the styled button, create a button in the element, copy it to another file, import and export default, then refresh to confirm it looks the same with no errors.

convert a functional component to a class-based one by importing the component, using a constructor with state for costs and cards, and moving render logic and handlers into class methods.

Learn how to use a useEffect cleanup to remove a mousemove listener, preventing memory leaks, while updating live x and y coordinates.

Create an input field bound to an id and fetch a specific card with useEffect to display the user name and phone number and ensure a single request.

Explains how React context eliminates props drilling by creating a context, wrapping the app with a provider, and consuming the value in nested components A, B, and C.

Learn how to use multiple React contexts by creating a color context with a provider and consumer, importing and consuming name and color values in a component.

Learn to use useReducer to manage multiple state counters as objects, defining action types for increment and decrement (including content1 and content2), and dispatching updates with initial state and reset.

Explore using multiple useReducer hooks to run two independent counters with separate states, both starting at zero, dispatching actions for increment, decrement, and reset.

Demonstrate how to use useReducer with useContext to manage and share state across components, wiring initial state, dispatch, and a provider to drive a counter and form components.

Learn to manage state with useReducer and useContext by composing and rendering components B and C, importing them and passing actions to control state across components.

Use useReducer and useEffect to fetch data with axios, manage loading and errors, and render to-dos via dispatch-driven state.

Beautify the list with reactstrap and bootstrap by installing packages, importing bootstrap, and styling the list group; display completed tasks in green badges and incomplete ones via data.

Demonstrates using useMemo and memo to prevent unnecessary re-renders in a React app by memoizing a child component and rendering count only when state changes.

Demonstrate using useEffect with cleanup to handle mounting and unmounting, track component mounting with useRef, and prevent state updates after unmount during a simulated fetch timer.